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First Workshop on
Nonlinear Dispersive Equations30/10/2013 to 1/11/2013
IMECC-UNICAMP, Campinas, Brazil
Scientific Committee
Jaime Angulo - USP, Brazil
Jerry Bona - UIC, USA
Thierry Cazenave - UPMC, France
Rafael Iório - IMPA, Brazil
Felipe Linares - IMPA, Brazil
Gustavo Ponce - UCSB, USA
Jean-Claude Saut - U. Paris-Sud, France
Sponsors:
Organizing Committee
Xavier Carvajal - IM/UFRJ
Mahendra Panthee -IMECC/UNICAMP
Ademir Pastor - IMECC/UNICAMP
Márcia Scialom - IMECC/UNICAMP
For detailed information please visit
www.ime.unicamp.br/~nde/
or send e-mail to [email protected]
CC
Day -1: Wednesday, 30th October
Auditorio – Hebe BiagioniIMECC
Time Speaker Title
8:00-9:00 Organizers Registration / Opening
Chair Felipe Linares
9:00-9:40 J. Bona Long-crested wave propagation
9:45-10:15 F. Natali Orbital stability of periodic waves for the Klein-Gordon type
equations
10:20-10:40 Coffee Break
Chair Axel Grunrock
10:45-11:15 A. Corcho On the dynamics of symmetric solutions for the
Schrodinger-Korteweg de Vries system in the energy space
11:20-11:50 L.G. Farah On the inhomogeneous nonlinear Schrodinger equation
12:55-12:25 L. C. F. Ferreira On the Schrodinger equation with singular potentials
12:30-14:30 Lunch Break
Chair Thierry Cazenave
14:30-15:10 J. Angulo Instability of cnoidal-peak solutions for the NLS equation
with a periodic δ–interaction
15:15-15:45 C. Hernandez Stability of standing waves of a nonlinear Schrodinger equation
with a Dirac delta potential
15:50-16:20 Coffee Break
16:20-17:00 J. Albert Uniqueness of solutions to equations for KdV multisolitons
17:05-17:35 J. M. Jimenez On the persistence properties of solutions of a fifth order KdV
equation in weighted Sobolev spaces
20:00-22:00 Football - Match Escola de Futebol Boca Juniors
Rua Carlos Martins, 17, Barao Geraldo (starts at 21:00)
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Day -2: Thursday, 31st October
Auditorio – Hebe BiagioniIMECC
Time Speaker Title
Chair Jaime Angulo
9:00-9:40 R. Iorio On the Cauchy problem associated to the Birnkman flow in Rn
9:45-10:15 A. Pazoto Controllability of a 1-D tank containing a fluid modeled by a
Boussinesq system
10:20-10:40 Coffee Break
Chair Adan Corcho
10:45-11:15 N. Godet Blow-up for the nonlinear Schrodinger equation on manifolds
11:20-11:50 N. Visciglia On the inhomogeneous nonlinear Schrodinger equation
12:55-12:25 R. Pastran On a perturbation of the Benjamin-Ono equation
12:30-14:30 Lunch Break
Chair John Albert
14:30-15:10 A. Grunrock The Cauchy problem for the Zakharov-Kuznetsov equation in 2 D
15:15-15:45 A-S Suzzoni Almost sure global well-posedness for the cubic wave equation
15:50-16:20 Coffee Break Poster Session
16:20-17:00 F. Linares Dispersive perturbations of Burgers and hyperbolic equations I:
local theory
17:05-17:35 - Poster Session
20:00-23:00 Dinner Estancia Grill
Av. Albino J.B. de Oliveira 271, Barao Geraldo
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Day -3: Friday, 1st November
Auditorio – Hebe BiagioniIMECC
Time Speaker Title
Chair Jerry Bona
9:00-9:40 G. Ponce Recent results on uniqueness and decay properties of solutions
to the KdV and BO equations
9:45-10:15 A. Esfahani Scattering of solutions and stability of solitary waves for the
generalized BBM-ZK equation
10:20-10:40 Coffee Break
Chair Luis Gustavo Farah
10:45-11:15 J. Ramos On the existence of minimal blow-up solutions for the
nonlinear H12 × H− 1
2 wave equation
11:20-11:50 V. Barros Infinite energy solutions for Schrodinger-type equations
with a nonlocal term
12:55-12:25 E. Alarcon The quasi-parabolic nature of the KdV equation in the
asymmetrically weighted Sobolev space
12:30-14:30 Lunch Break
Chair Gustavo Ponce
14:30-15:10 S. Mancas Fifth order BBM type equation: Weierstrass traveling
wave solutions
15:15-15:45 G. Doronin Decay of solutions and critical size of spatial domains for
the ZK equation
15:50-16:20 Coffee Break
16:20-17:00 T. Cazenave Finite-time blowup and global existence for the complex
Ginzburg-Landau equation
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Abstracts – Conference Talks
(1) Eduardo Arbieto Alarcon, Universidade Federal de Goias, Brazil, [email protected]
Title: The quasi-parabolic nature of the KdV equation in the asymmetrically
weighted Sobolev space
Abstract: In 1983, Tosio Kato in the paper, On the Cauchy Problem for the
(Generalized) Korteweg-de Vries Equation, considers the initial value problem for
KdV for initial data in asymmetric spaces, with the resulting irreversibility in time.
We consider the Cauchy problem for the forced Kortewegde Vries equation
∂u
∂t+D3 u+ uDu = f, t > 0, x ∈ R, u(0) = φ, (0.1)
where D =∂
∂x, with initial data in Y = Xs ∩L2
b where L2b = L2(e2bx dx) for s ≥ 0,
b > 0 and Xs is the Sobolev space or the Zhidkov space, of order s. Moreover
f ∈ L2b ∩H∞(R). Results for the globally well posed is obtained for (0.1).
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(2) John Albert, University of Oklahoma, USA, [email protected]
Title: Uniqueness of solutions to equations for KdV multisolitons
Abstract: Solitary-wave profiles of the Korteweg-de Vries (KdV) equation are so-
lutions of a first-order nonlinear ordinary differential equation. It is an elementary
exercise, often assigned in undergraduate differential equations courses, to integrate
this equation and show that the only nonsingular solutions which vanish at infinity
are the familiar hyperbolic secant solitary-wave profiles. In studying the stability of
multi-soliton solutions of the KdV equation, an analogous problem comes up for the
higher-order nonlinear ordinary differential equations (stationary KdV equations)
which multi-soliton profiles satisfy. That is, are there any nonsingular solutions
of the stationary KdV equations which vanish at infinity, besides the well-known
multi-soliton profiles? We answer this question in the negative, at least for the
case of 2-solitons; and the method used should generalize to the case of arbitrarily
many solitons. We do this by integrating the equations, using a change of variables
due to Dubrovin, Gelfand and Dickey, which takes advantage of the fact that each
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stationary KdV equation is a finite-dimensional completely integrable Hamiltonian
system. We discuss applications to stability theory for KdV and other completely
integrable equations.
This is joint work with Nghiem Nguyen.
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(3) Jaime Angulo Pava, IME-USP, Brazil, [email protected]
Title: Instability of cnoidal-peak solutions for the NLS equation with a periodic
δ–interaction
Abstract: In this talk we establish a theory of existence and stability of space-
periodic standing waves for the cubic nonlinear Schrodinger equation (NLS-equation)
with a point defect determined by a space-periodic Dirac distribution at the ori-
gin. This equation admits a family of periodic-peak traveling waves solutions with
a profile determined by the cnoidal Jacobi elliptic function. Via a perturbation
method and continuation argument, we prove that in the case of a repulsive defect
the cnoidal profile is unstable in H1per([−π, π]) with respect to perturbations which
have the same space-periodic as the wave itself. Global well-posedness is verified
for the Cauchy problem in H1per([−π, π]).
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(4) Vanessa Barros de Oliveira, Univ. Federal da Bahia, Brazil, [email protected]
Title: Infinite energy solutions for Schrodinger-type equations with a nonlocal term
Abstract: We study the Cauchy problem associated with nonlinear Schrodinger-
type equations with a nonlocal term in Rn. Existence and uniqueness of local and
global solutions are established in spaces which allow singular initial data. Scatter-
ing, asymptotic stability, and decay rates are also proved.
Joint work with Ademir Pastor.
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(5) Jerry Bona, UIC, Chicago, USA, [email protected]
Title: Long-crested wave propagation
Abstract: The lecture will discuss long-crested water waves which, while fully
three-dimensional, feature only gentle variation in the y-direction in an xyz-Cartesian
coordinate system, where gravity acts in the direction of decreasing values of z.
Such waves are common in wave channels and on near-shore zones of large bodies
of water.
Assuming the initial data has a limit as |y| becomes large, long-time well-posedness
theory for Boussinesq-type systems is developed. These systems can be shown to
provide accurate renditions of the full, three-dimensional Euler equations in the case
of long-crested waves and appear to be a superior approximation to the well-known
KP-system.
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(6) Thierry Cazenave, Universite Pierre et Marie Curie & CNRS, France, [email protected]
Title: Finite-time blowup and global existence for the complex Ginzburg-Landau
equation
Abstract: In this talk, I will discuss recent joint works with Flavio Dickstein
(UFRJ) and Fred B. Weissler (Paris-Nord) on the complex Ginzburg-Landau equa-
tion ∂tu = eiθ∆u+ eiγ|u|αu, set either on the whole space or on the torus (i.e., with
periodic boundary conditions). Here −π2≤ θ, γ ≤ π
2and α > 0. In the case θ = γ,
we prove finite-time blowup under a standard energy condition on the initial value
and study how the blowup time depends on θ. In the more general case γ 6= θ, we
prove the existence of standing waves on the torus, for sufficiently small α. I will
also comment several open questions that naturally arise.
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(7) Adan Corcho, IM-UFRJ, Brazil, [email protected]
Title: On the dynamics of symmetric solutions for the Schrodinger-Korteweg de
Vries system in the energy space
Abstract: In this work we study interactions between long and short waves that
arise in various physical situations. More precisely, we study the interactions mod-
eled by the Initial Value Problem (IVP) associated to the Schrodinger-Korteweg de
Vries system, that is,
iφτ + φξξ = αφη + β|φ|2φ, τ, ξ ∈ R,ητ + ηξξξ + ηηξ = γ(|φ|2)ξ,φ(ξ, 0) = φ0(ξ), η(ξ, 0) = η0(ξ),
(0.2)
where the short wave φ = φ(ξ, τ) is a complex valued function, the long wave
η = η(ξ, τ) is a real valued function and α, β and γ are real constants with αγ 6= 0.
Many works concerning local and global well-posedness for the IVP (0.2) have
been developed by several authors for initial data (u0, v0) in the classical Sobolev
spaces Hs ×Hκ.
All global well-posedness results known for the system (0.2) were obtained in
the case αγ > 0. Here, we present interesting results about the dynamics of the
solutions of the system (0.2) in the energy space H1 × H1, under symmetry as-
sumptions, in the case αγ < 0.
Joint work with X. Carvajal.
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(8) Gleb Doronin, Universidade Estadual de Maringa, Brazil, [email protected]
Title: Decay of solutions and critical size of spatial domains for the ZK equation
Abstract: Initial-boundary-value problems for the Zakharov-Kuznetsov equation
posed on bounded rectangles and on a strip are considered. The spectral properties
of a stationary operator are studied in order to show that the evolution problem
possesses restrictions on the size of a spatial domain. The exponential ecay of
regular solutions to problems with- and without above restrictions is established.
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(9) Amin Esfahani, Damghan University, Iran, [email protected]
Title: Scattering of solutions and stability of solitary waves for the generalized
BBM-ZK equation
Abstract: A two-dimensional version of the BBM equation will be considered.
The existence and scattering of global small amplitude solutions to this equation
will be studied. The orbital stability of solitary wave solutions of this equation will
be also investigated.
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(10) Luiz Gustavo Farah, UFMG, Brazil, [email protected]
Title: On the inhomogeneous nonlinear Schrodinger equation
Abstract: In this talk we consider the Inhomogeneous Nonlinear Schrodinger
Equation
i∂tu+ ∆u+ |x|−b|u|2σu = 0, x ∈ RN , t > 0,
where N ≥ 1, 0 < b < min{2, N} and2− bN
< σ <2− bN − 2
.
We prove a new Gagliardo-Nirenberg estimate and use it to obtain global well-
posedness in H1(RN) for small data. We also prove the existence of blow-up solu-
tions for certain initial data.
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(11) Lucas C. F. Ferreira, UNICAMP, Brazil, [email protected]
Title: On the Schrodinger equation with singular potentials
Abstract: We study the Cauchy problem for the non-linear Schrodinger equation
with singular potentials. For point-mass potential and nonperiodic case, we prove
existence and asymptotic stability of global solutions in weak-Lp spaces. Specific
interest is give to the point-like δ and δ′ impurity and for two δ-interactions in one
dimension. We also consider the periodic case which is analyzed in a functional
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space based on Fourier transform and local-in-time well-posedness is proved.
Joint work with Jaime Angulo Pava (IME-USP).
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(12) Nicolas Godet, Toulouse University, France, [email protected]
Title: Blow-up for the nonlinear Schrodinger equation on manifolds
Abstract: We study the quintic nonlinear Schrodinger equation posed on a mani-
fold M. If M is the real line, and near the ground state, the blow up theory for this
equation is well-known. In this setting, essentially only one regime is possible; it
is characterized by an almost self-similar blow-up rate and is known to be stable
by perturbation of the initial data. In this talk, we show a property of geometric
stability of this regime in the sense that we prove that it persists in noneuclidean
geometries but with a radial symmetry assumption.
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(13) Axel Grunrock, Heinrich-Heine-Universitat Dusseldorf, Germany, [email protected]
duesseldorf.de
Title: The Cauchy problem for the Zakharov-Kuznetsov equation in 2 D
Abstract: The Zakharov-Kuznetsov (ZK) equation
ut + ∂x∆u+ ∂x(u2) = 0, u = u(t, x, y), (x, y) ∈ R× Rn−1 (0.3)
is a generalization of the famous Korteweg-de Vries (KdV) equation to higher space
dimensions. If n = 2, the Cauchy-Problem for this equation is known to be globally
well-posed in Hs(R2), if s ≥ 1 (Faminskii, 1995) and locally well-posed, if s > 34
(Linares & Pastor, 2009). We report on a recent improvement of the local result
down to s > 12, which was obtained in collaboration with S. Herr (Grunrock & Herr,
2013). This progress is achieved by a symmetrisation of the differential equation
(using a linear transformation of the space variables) and by a bilinear Strichartz
type estimate for free solutions of the linear part of the transformed equation.
Joint work with S. Herr.
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(14) Cesar Adolfo Hernandez Melo, Universidade Estadual de Maringa, Brazil, cah-
Title: Stability of standing waves of a nonlinear Schrodinger equation with a Dirac
delta potential.
Abstract: The question of stability/instability of standing waves for nonlinear
Schrodinger equations with zero potential have been widely debated in the last
few decades. In contrast, this issue has received less attention when the potential
in the equation is nonzero. In our work, we address the stability/instability of
standing waves of a Schrodinger equation with a Dirac potential and a cubic-quintic
nonlinearity, namely
iut + uxx + Zδ(x)u+ u(|u|2 + |u|4) = 0, x, t ∈ R,
where δ is the Dirac distribution at the origin and Z is a real parameter. A main
difficulty in our approach is to compute the number of negative eigenvalues of the
linearized operator around the standing waves, and it is overcome by a perturbation
method and a continuation arguments. Among others, we show that the standing
wave solution is stable in H1(R) for Z > 0 and unstable in H1even(R) for Z <
−0.866025 approximately.
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(15) Rafael Jose Iorio, Jr., IMPA, Brazil, [email protected]
Title: On the Cauchy problem associated to the Birnkman flow in Rn
Abstract: In this work we deal with the Cauchy problem associated to the Brinkman
flow, which models fluid flow in certain types of porous media. We study local and
global well-posedness in Sobolev spaces Hs(Rn), s > n2
+ 1, using Kato’s theory for
quasilinear equations and parabolic regularization.
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(16) Jose Manuel Jimenez, Universidad Nacional de Colombia, Colombia, [email protected]
Title: On the persistence properties of solutions of a fifth order KdV equation in
weighted Sobolev spaces
Abstract: We study persistence properties of solutions for a fifth order KdV equa-
tion in the weighted Sobolev spaces
Zs,r = Hs(Rn) ∩ L2(|x|2rdx)
and we establish that for a solution of a fifth order KdV equation to satisfy the
persistent property in L2(|x|2rdx) it is necessary to have a persistence property in
an appropriate Sobolev space Hs(Rn).
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(17) Felipe Linares, IMPA, Brazil, [email protected]
Title: Dispersive perturbations of Burgers and hyperbolic equations I: local theory
Abstract: The aim of this talk is to show how a weakly dispersive perturbation of
the inviscid Burgers equation improve (enlarge) the space of resolution of the local
Cauchy problem. More generally we will review several problems arising from weak
dispersive perturbations of nonlinear hyperbolic equations or systems.
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(18) Stefan C. Mancas, Embry -Riddle Aeronautical University, USA, [email protected]
Title: Fifth order BBM type equation: Weierstrass traveling wave solutions
Abstract: We use second order approximation to the higher-order Boussinesq type
system to derive a single Benjamin-Bona-Mahony (BBM) type equation.
Using a traveling wave reduction we show that the single 5BBM type equation
admits solutions that can be written of Weierstrass ℘ elliptic functions. For certain
relationships between constants, the solutions can be simplified to the well-known
Jacobi elliptic, hyperbolic functions or circular periodic functions.
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(19) Fabio Natali, Universidade Estadual de Maringa, Brazil, [email protected]
Title: Orbital stability of periodic waves for the Klein-Gordon type equations
Abstract: In this talk, we prove results of orbital stability and instability of
periodic waves related to the Klein-Gordon equation with general nonlinearities.
Among the equations studied here, we can cite, the logarithmic and quintic Klein-
Gordon as well as the Liouville equation. The main tool used in our approach is a
recent computational method in order to decide about the nonpositive spectrum of
the linearized operator combined with the classical stability theory.
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(20) Ricardo Pastran, Universidad Nacional de Colombia, Colombia, [email protected]
Title: On a perturbation of the Benjamin-Ono equation
Abstract: We recall some results about local and global well-posedness in the
Sobolev space Hs(R) of the initial value problem associated to a perturbation of
the Benjamin-Ono equation ut + uux + βHuxx + η(Hux − uxx) = 0, where x ∈ R,
t ≥ 0, η > 0 and H denotes the usual Hilbert transform. We will show some new
results about the unique continuation of the solutions to this equation.
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(21) Ademir Pazoto, Universidade Federal do Rio de Janeiro (UFRJ), Brazil, [email protected]
Title: Controllability of a 1-D tank containing a fluid modeled by a Boussinesq
system
Abstract: This paper is concerned with the exact controllability problem for a 1-D
tank containing an inviscid incompressible irrotational fluid. The tank is subject
to one-dimensional horizontal motion. We take as fluid model a Boussinesq system
of KdV-KdV type, and as control the acceleration of the tank. We derive for the
linearized system an exact controllability result in an appropriate space.
Joint work with Lionel Rosier and Dugan Nina.
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(22) Gustavo Ponce, University of California-Santa Barbara, USA, [email protected]
Title: Recent results on uniqueness and decay properties of solutions to the KdV
and BO equations
Abstract: In this talk we shall present some recent results concerning uniqueness
and decay properties of solutions to the Korteweg-de Vries (KdV) and Benjamin-
Ono (BO) equations. In the case of the KdV eq. our results are related with
sharp persistence properties and reflect the “parabolic” character of solutions of
this equation in exponential weighted spaces first observed by T. Kato. In the case
of the BO our results provide a unconditional uniqueness result involving only ”two
time observations”.
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(23) Javier Ramos, IMPA, Brazil, [email protected]
Title: On the existence of minimal blow-up solutions for the nonlinear H12 × H− 1
2
wave equation
Abstract: We prove the existence of minimal blow-up solutions for the nonlinear
wave equation with initial data in H12 ×H− 1
2 in dimensions d ≥ 2. The proof relays
on the nonlinear profile decomposition and one of the main difficulties comes from
the presence of the Lorentz symmetry of the equation.
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(24) Anne-Sophie de Suzzoni, Universite Paris 13, France, [email protected]
Title: Almost sure global well-posedness for the cubic wave equation
Abstract: We propose to use probabilities to solve the cubic wave equation on the
sphere S3 in spaces of low (sub critical) regularity. First, we use a result by Burq
and Lebeau to get a L2 basis consisting in spherical harmonics uniformly bounded
in Lp. Then, we use it to randomize an initial datum in L2 and deduce from its
probabilistic properties global well-posedness.
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(25) Nicola Visciglia, University of Pisa, Italy, [email protected]
Title: NLS in the partially periodic setting
Abstract: We study the long time behaviour of solutions to NLS in the partially
periodic case.
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Abstracts - Posters
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(1) Thiago Pinguello de Andrade, UNICAMP, Brazil, [email protected]
Title: Orbital stability of periodic travelling-wave solutions for the mKdV equation
Abstract: In this work we present the orbital stability of periodic travelling-wave
solutions for the mKdV equation
ut + uxxx + u2ux = 0. (0.4)
Travelling waves are special solutions having the form u(x, t) = φ(x − ct). This
leads us to look for periodic solutions of the ODE
−φ′′ + cφ− φ3 − A = 0, (0.5)
where A is an integration constant. In the case A = 0, periodic solutions for (0.5)
have been found and the orbital stability of the respective travelling waves estab-
lished. However, if we assume A 6= 0 we find a new family of travelling-waves
solutions which has not been studied yet. This is the main subject of our work.
Joint work with Ademir Pastor-UNICAMP.
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(2) Roberto Capistrano Filho, UFRJ, Brazil and Universite de Lorraine, France, capis-
Title: Internal controllability for the Korteweg-de Vries equations on a bounded
domain
Abstract: This work is devoted to the study of the internal controllability for the
Korteweg-de Vries equation posed on a bounded interval. The main part of the
work focus on the null controllability property of a linearized equation. Following a
classical duality approach (see e.g. J. -L. Lions, Exact controllability, stabilization
and perturbations for distributed system, SIAM 98’) the problem is reduced to the
study of an observability inequality which is proved by using a Carleman estimate.
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Then, making use of a cut-off argument and the duality approach, the exact con-
trollability is also investigated. In both cases, we return to the nonlinear system
by means of a fixed point argument.
Joint work with L. Rosier (UL) and A. F. Pazoto (UFRJ).
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(3) Alysson Cunha, UFG-CAJ, Brazil, [email protected]
Title: Unique continuation principles for the Benjamin-Ono-Zakharov-Kuznetsov
equation
Abstract: We consider the initial-value problem (IVP) associated with the Benjamin-
Ono-Zakharov-Kuznetsov equation
ut + H∂2xu+ uxyy + uux = 0, (x, y) ∈ R2, t > 0
and prove some unique continuation principles. To obtain our results, we use tools
from harmonic analysis such as the Stein derivative, the boundedness of the Hilbert
transform in weighted Sobolev spaces and the Calderon commutator estimate. In
particular, these continuation principles show that some persistence properties for
the IVP are sharp.
Joint work with Ademir Pastor-UNICAMP.
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(4) Pedro Gamboa Romero, UFRJ, Brazil, [email protected]
Title: Global well-posedness for the critical Schrodinger-Debye system
Abstract: We establish global well-posedness results for the initial value prob-
lem associated to the Schrodinger-Debye system in dimension two, for data in
Hs(R2)× L2(R2), 2/3 < s ≤ 1 and for data in H1(R2)×H1(R2).
Joint work with X. Carvajal from IM-UFRJ.
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(5) Nataliia Goloshchapova, IME–USP, Brazil, [email protected]
Title: Stability of standing waves for a nonlinear Schrodinger equation with δ-
potential. Extension theory approach
Abstract: The aim of our work is to demonstrate effectiveness of standard exten-
sion theory “tricks” in investigation of stability of standing waves for semi-linear
Schrodinger equation with a delta-potential. Our approach relies on the abstract
theory by Grillakis, Shatah and Strauss for Hamiltonian systems which are invariant
under a one-parameter group of operators.
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(6) Benson Muite, KAUST, Saudi Arabia, [email protected]
Title: Numerical simulation of rough solutions to dispersive wave equations
Abstract: We give numerical evidence that splitting methods can compute rough
solutions to nonlinear dispersive equations. Example computations are shown for
the Davey-Stewartson, 1,2 and 3 dimensional L2 critical nonlinear Schrodinger,
Maxwell’s equations and the p-system. Current analysis of splitting schemes seems
to require higher regularity than is shown in the numerical simulations. This is
work in progress with D. Acevedo-Feliz, A. Alghamdi, D. Ketcheson, N. Mauser,
M. Quezada De Luna, D. San Roman Alerigi, M. Srinivasan, and H-P. Stimming.
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