Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Horváth, D. X."'
We study the effects of integrability breaking on the relaxation dynamics of the (double) sine-Gordon model. Compared to previous studies, we apply an alternative viewpoint motivated by open-system physics by separating the phase field into homogeneo
Externí odkaz:
http://arxiv.org/abs/2408.14428
Publikováno v:
Comput. Phys. Commun. 277 (2022) 108376
Truncated Conformal Space Approach (TCSA) is a highly efficient method to compute spectra, operator matrix elements and time evolution in quantum field theories defined as relevant perturbations of 1+1-dimensional conformal field theories. However, s
Externí odkaz:
http://arxiv.org/abs/2201.06509
Publikováno v:
SciPost Phys. 12, 144 (2022)
We study inhomogeneous quantum quenches in the attractive regime of the sine-Gordon model. In our protocol, the system is prepared in an inhomogeneous initial state in finite volume by coupling the topological charge density operator to a Gaussian ex
Externí odkaz:
http://arxiv.org/abs/2109.06869
Publikováno v:
Phys. Rev. A 100, 013613 (2019)
We discuss the non-equilibrium time evolution of the phase field in the sine-Gordon model using two very different approaches: the truncated Wigner approximation and the truncated conformal space approach. We demonstrate that the two approaches agree
Externí odkaz:
http://arxiv.org/abs/1809.06789
Publikováno v:
JHEP 08 (2018) 170
We study homogeneous quenches in integrable quantum field theory where the initial state contains zero-momentum particles. We demonstrate that the two-particle pair amplitude necessarily has a singularity at the two-particle threshold. Albeit the exp
Externí odkaz:
http://arxiv.org/abs/1805.08132
Autor:
Horvath, D. X., Takacs, G.
We present a numerical computation of overlaps in mass quenches in sine-Gordon quantum field theory using truncated conformal space approach (TCSA). To improve the cut-off dependence of the method, we use a novel running coupling definition which has
Externí odkaz:
http://arxiv.org/abs/1704.00594
Publikováno v:
JHEP 07 (2016) 051
We study the massless flows described by the staircase model introduced by Al.B. Zamolodchikov through the analytic continuation of the sinh-Gordon S-matrix, focusing on the renormalisation group flow from the tricritical to the critical Ising model.
Externí odkaz:
http://arxiv.org/abs/1604.05635
Publikováno v:
Nucl. Phys. B 902, 508 (2016)
We consider the problem of determining the initial state of integrable quantum field theory quenches in terms of the post-quench eigenstates. The corresponding overlaps are a fundamental input to most exact methods to treat integrable quantum quenche
Externí odkaz:
http://arxiv.org/abs/1510.01735
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