42 citations · 194 across the 13 of their papers we have counts for
13 papers
The evolution of spectral data for nonlinear Klein-Gordon models
P. H. S. Palheta, P. E. G. Assis, T. M. N. Gonçalves
We investigate the effect of the breaking of integrability in the integrals of motion of a sine-Gordon-like system. The class of quasi-integrable models, discussed in the literatur…
Thermodynamics of classical integrable field theories
P. E. G. Assis
We investigate the thermodynamics of integrable classical field theories under the effect of a random initial configuration, motivated by the nonequilibrium evolution of quantum fi…
PT-symmetry in quasi-integrable models
P. E. G. Assis
We reinforce the observations of almost stable scattering in nonintegrable models and show that -symmetry can be used as a guiding principle to select relevant system…
A(2|1) spectral equivalences and nonlocal integrals of motion
P. E. G. Assis
We study the spectral correspondence between a particular class of Schrodinger equations and supersymmetric quantum integrable model (QIM). The latter, a quantized version of the A…
Metric operators for non-Hermitian quadratic su(2) Hamiltonians
Paulo E. G. Assis
A class of non-Hermitian quadratic su(2) Hamiltonians having an anti-linear symmetry is constructed. This is achieved by analysing the possible symmetries of such systems in terms…
From real fields to complex Calogero particles
Paulo E. G. Assis, Andreas Fring
We provide a novel procedure to obtain complex PT-symmetric multi-particle Calogero systems. Instead of extending or deforming real Calogero systems, we explore here the possibilit…