M Correia, J Penedones, A Vuignier - Journal of High Energy Physics, 2023 - Springer
A bstract We merge together recent developments in the S-matrix bootstrap program to develop a dual setup in 2 space-time dimensions incorporating scattering amplitudes of …
In contrast to lattice systems where powerful numerical techniques such as matrix product state based methods are available to study the non-equilibrium dynamics, the non …
The Fock-space Hamiltonian truncation method is developed further, paying particular attention to the treatment of the scalar field zero mode. This is applied to the two …
DX Horváth, K Hódsági, G Takács - Computer Physics Communications, 2022 - Elsevier
Abstract Truncated Conformal Space Approach (TCSA) is a highly efficient method to compute spectra, operator matrix elements and time evolution in quantum field theories …
H Chen, AL Fitzpatrick, D Karateev - Journal of High Energy Physics, 2022 - Springer
A bstract We combine the methods of Hamiltonian Truncation and the recently proposed generalisation of the S-matrix bootstrap that includes local operators to determine the two …
D Szász-Schagrin, G Takács - Physical Review D, 2022 - APS
The false vacuum is a metastable state that can occur in quantum field theory, and its decay was first studied semiclassically by Coleman. In this work, we consider the 1+ 1 dimensional …
We both review and augment the lightcone conformal truncation (LCT) method. LCT is a Hamiltonian truncation method for calculating dynamical quantities in QFT in infinite volume …
D Szász-Schagrin, I Lovas, G Takács - Physical Review B, 2024 - APS
We study the nonequilibrium dynamics of the quantum sine-Gordon model describing a pair of Josephson-coupled one-dimensional bosonic quasicondensates. Motivated by …
We study signatures of quantum chaos in (1+ 1) D quantum field theory (QFT) models. Our analysis is based on the method of Hamiltonian truncation, a numerical approach for the …