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cond-mat.stat-mech2021★ 16 cited
Quantum quenches in an interacting field theory: full quantum evolution vs. semi-classical approximations
D. Szász-Schagrin, I. Lovas, G. Takács
We develop a truncated Hamiltonian method to investigate the dynamics of the theory following quantum quenches. The results are compared to two different semi-classica…
cond-mat.str-el2021
Cascade of singularities in the spin dynamics of a perturbed quantum critical Ising chain
Xiao Wang, Haiyuan Zou, Kristóf Hódsági +3
When the quantum critical transverse-field Ising chain is perturbed by a longitudinal field, a quantum integrable model emerges in the scaling limit with massive excitations descri…