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Time-dependence of correlation functions following a quantum quench

5 Pith papers cite this work. Polarity classification is still indexing.

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abstract

We show that the time-dependence of correlation functions in an extended quantum system in d dimensions, which is prepared in the ground state of some hamiltonian and then evolves without dissipation according to some other hamiltonian, may be extracted using methods of boundary critical phenomena in d+1 dimensions. For d=1 particularly powerful results are available using conformal field theory. These are checked against those available from solvable models. They may be explained in terms of a picture, valid more generally, whereby quasiparticles, entangled over regions of the order of the correlation length in the initial state, then propagate classically through the system.

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Random matrix theory signatures in free field theory

hep-th · 2025-07-24 · unverdicted · novelty 6.0

In finite-volume massive free scalar field theory after local quench, spacing ratios of two-point function extrema follow GOE statistics and an extrema-based form factor shows RMT dip-ramp-plateau.

Crosscap Quenches and Entanglement Evolution

hep-th · 2024-12-24 · unverdicted · novelty 6.0

Introduces crosscap quenches in CFTs and holographic models to derive universal entanglement entropy evolution, validated by numerics in spin systems.

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