44 citations · 329 across the 19 of their papers we have counts for
19 papers
Quasi-local charges and the Generalized Gibbs Ensemble in the Lieb-Liniger model
Tamas Palmai, Robert M. Konik
We consider the construction of a generalized Gibbs ensemble composed of complete bases of conserved charges in the repulsive Lieb-Liniger model. We will show that it is possible t…
Entanglement Entropy from the Truncated Conformal Space
T. Palmai
A new numerical approach to entanglement entropies of the Renyi type is proposed for one-dimensional quantum field theories. The method extends the truncated conformal spectrum app…
Particle Formation and Ordering in Strongly Correlated Fermionic Systems: Solving a Model of Quantum Chromodynamics
P. Azaria, R. M. Konik, Ph. Lecheminant +3
In this paper we study a (1+1)-dimensional version of the famous Nambu-Jona-Lasinio model of Quantum Chromodynamics (QCD2) both at zero and finite hadron density. We use non-pertur…
Edge exponents in work statistics out of equilibrium and dynamical phase transitions from scattering theory in one dimensional gapped systems
T. Palmai
I discuss the relationship between edge exponents in the statistics of work done, dynamical phase transitions, and the role of different kinds of excitations appearing when a non-e…
Studying the Perturbed Wess-Zumino-Novikov-Witten SU(2)k Theory Using the Truncated Conformal Spectrum Approach
R. M. Konik, T. Palmai, G. Takacs +1
We study the Wess-Zumino-Novikov-Witten (WZNW) theory perturbed by the trace of the primary field in the adjoint representation, a theory governing the low-energy behavio…
Excited state entanglement in one dimensional quantum critical systems: Extensivity and the role of microscopic details
T. Pálmai
We study entanglement via the subsystem purity relative to bipartitions of arbitrary excited states in (1+1)-dimensional conformal field theory, equivalent to the scaling limit of…
Quench echo and work statistics in integrable quantum field theories
Tamas Palmai, Spyros Sotiriadis
We propose a boundary thermodynamic Bethe ansatz calculation technique to obtain the Loschmidt echo and the statistics of the work done when a global quantum quench is performed on…
Diagonal multi-soliton matrix elements in finite volume
T. Pálmai, G. Takács
We consider diagonal matrix elements of local operators between multi-soliton states in finite volume in the sine-Gordon model, and formulate a conjecture regarding their finite si…
The inverse scattering problem at fixed energy based on the Marchenko equation for an auxiliary Sturm-Liouville operator
Tamas Palmai, Barnabas Apagyi
A new approach is proposed to the solution of the quantum mechanical inverse scattering problem at fixed energy. The method relates the fixed energy phase shifts to those arising i…
Fixed energy potentials through an auxiliary inverse eigenvalue problem
Tamas Palmai, Barnabas Apagyi
An inverse scattering method based on an auxiliary inverse Sturm-Liouville problem recently proposed by Horváth and Apagyi [Mod. Phys. Lett. B 22, 2137 (2008)] is examined in vario…
Sine-Gordon multi-soliton form factors in finite volume
G. Z. Feher, T. Palmai, G. Takacs
Multi-soliton form factors in sine-Gordon theory from the bootstrap are compared to finite volume matrix elements computed using the truncated conformal space approach. We find con…
Simplified solutions of the Cox-Thompson inverse scattering method at fixed energy
Tamas Palmai, Miklos Horvath, Barnabas Apagyi
Simplified solutions of the Cox-Thompson inverse quantum scattering method at fixed energy are derived if a finite number of partial waves with only even or odd angular momenta con…
Semi-analytic equations to the Cox-Thompson inverse scattering method at fixed energy for special cases
Tamas Palmai, Miklos Horvath, Barnabas Apagyi
Solution of the Cox-Thompson inverse scattering problem at fixed energy [1,2,3] is reformulated resulting in semi-analytic equations. The new set of equations for the normalization…
Development of a Cox-Thompson inverse scattering method to charged particles
Tamas Palmai, Barnabas Apagyi, Werner Scheid
A Cox-Thompson fixed-energy quantum inverse scattering method is developed further to treat long-range Coulomb interaction. Depending on the reference potentials chosen, two method…
On nonsingular potentials of Cox-Thompson inversion scheme
Tamas Palmai, Barnabas Apagyi
We establish a condition for obtaining nonsingular potentials using the Cox-Thompson inverse scattering method with one phase shift. The anomalous singularities of the potentials a…
Quantum mechanical inverse scattering problem at fixed energy: a constructive method
Tamas Palmai, Barnabas Apagyi
The inverse scattering problem of the three-dimensional Schroedinger equation is considered at fixed scattering energy with spherically symmetric potentials. The phase shifts deter…
Regularization of multi-soliton form factors in sine-Gordon model
Tamas Palmai
A general and systematic regularization is developed for the exact solitonic form factors of exponential operators in the (1+1)-dimensional sine-Gordon model by analytical continua…
On the interlacing of cylinder functions
Tamas Palmai
Necessary and sufficient conditions for the interlacing of the zeros of cylinder functions and their derivatives of different orders are given.
Interlacing of positive real zeros of Bessel functions
Tamas Palmai, Barnabas Apagyi
We unify the three distinct inequality sequences (Abramowitz ans Stegun (1972) [1,9.5.2]) of positive real zeros of Bessel functions into a single one.