20 citations · 108 across the 17 of their papers we have counts for
18 papers
On the two-copy distillability of Werner states and a new partial trace inequality
Thomas C. Fraser, Felix Huber, Balázs Pozsgay +1
Problem 5 in {\it Five Open Problems in Quantum Information Theory} [PRX Quantum 3, 010101 (2022)], asks whether the two-ququart Werner state is two-copy dis…
Solving models with generalized free fermions II: Path-product expansion and conserved charges
Kohei Fukai, Balázs Pozsgay, István Vona
Free-fermion solvability in quantum spin systems is increasingly understood to be governed by a graph Clifford algebra defined from the frustration graph of the Hamiltonian. When t…
Bethe Ansatz with a Large Language Model
Balázs Pozsgay, István Vona
We explore the capability of a Large Language Model (LLM) to perform specific computations in mathematical physics: the task is to compute the coordinate Bethe Ansatz solution of s…
Solving models with generalized free fermions I: Algebras and eigenstates
Kohei Fukai, Balázs Pozsgay, István Vona
We study quantum spin chains solvable via hidden free fermionic structures. We study the algebras behind such models, establishing connections to the mathematical literature of the…
A free fermions in disguise model with claws
Kohei Fukai, István Vona, Balázs Pozsgay
Recently, several spin chain models have been discovered that admit solutions in terms of "free fermions in disguise." A graph-theoretical treatment of such models was also establi…
The complete trans-series for conserved charges in the Lieb-Liniger model
Zoltán Bajnok, János Balog, Ramon Miravitllas +2
We determine the complete trans-series solution for the (non-relativistic) moments of the rapidity density in the Lieb-Liniger model. The trans-series is written explicitly in term…
The complete trans-series for conserved charges in integrable field theories
Zoltán Bajnok, János Balog, István Vona
We analyze the vacuum expectation values of conserved charges in two dimensional integrable theories. We study the situations when the ground-state can be described by a single int…
Exact real time dynamics with free fermions in disguise
István Vona, Márton Mestyán, Balázs Pozsgay
We consider quantum spin chains with a hidden free fermionic structure, distinct from the Jordan-Wigner transformation and its generalizations. We express selected local operators…
Wiener-Hopf solution of the free energy TBA problem and instanton sectors in the O(3) sigma model
Zoltán Bajnok, János Balog, István Vona
Perturbation theory in asymptotically free quantum field theories is asymptotic. The factorially growing perturbative coefficients carry information about non-perturbative correcti…
Adiabatic gauge potential and integrability breaking with free fermions
Balázs Pozsgay, Rustem Sharipov, Anastasiia Tiutiakina +1
We revisit the problem of integrability breaking in free fermionic quantum spin chains. We investigate the so-called adiabatic gauge potential (AGP), which was recently proposed as…
Finite volume form factors in integrable theories
Zoltan Bajnok, Georgios Linardopoulos, István M. Szécsényi +1
We develop a new method to calculate finite size corrections for form factors in two-dimensional integrable quantum field theories. We extract these corrections from the excited st…
The full analytic trans-series in integrable field theories
Zoltan Bajnok, Janos Balog, Istvan Vona
We analyze a family of generalized energy densities in integrable quantum field theories in the presence of an external field coupled to a conserved charge. By using the Wiener-Hop…
Running coupling and non-perturbative corrections for O free energy and for disk capacitor
Zoltan Bajnok, Janos Balog, Arpad Hegedus +1
We reconsider the complete solution of the linear TBA equation describing the energy density of finite density states in the nonlinear sigma models by the Wiener-Hopf method…
Instanton effects vs resurgence in the sigma model
Zoltan Bajnok, Janos Balog, Arpad Hegedus +1
We investigate the ground-state energy of the integrable two dimensional sigma model in a magnetic field. By determining a large number of perturbative coefficients we explo…
Analytic resurgence in the O(4) model
Zoltán Bajnok, János Balog, István Vona
We study the perturbative expansion of the ground state energy in the presence of an external field coupled to a conserved charge in the integrable two-dimensional O nonlinear…
Exact finite volume expectation values of conserved currents
Zoltan Bajnok, Istvan Vona
The vacuum expectation values of conserved currents play an essential role in the generalized hydrodynamics of integrable quantum field theories. We use analytic continuation to ex…
Finite volume corrections of non-diagonal form factors
Istvan Vona
This thesis presents Lüscher's - and -term corrections to volume dependence of non-diagonal finite volume form factors in the scaling Lee-Yang model. An explicit calculation…
Leading exponential finite size corrections for non-diagonal form factors
Zoltan Bajnok, Marton Lajer, Balint Szepfalvi +1
We derive the leading exponential finite volume corrections in two dimensional integrable models for non-diagonal form factors in diagonally scattering theories. These formulas are…