TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhys.20.2.030
TI  - Entanglement and quench dynamics in the thermally perturbed tricritical fixed point
PY  - 2026/02/03
UR  - https://scipost.org/SciPostPhys.20.2.030
JF  - SciPost Physics
JA  - SciPost Phys.
VL  - 20
IS  - 2
SP  - 030
A1  - Király, Csilla
AU  - Lencsés, Máté
AB  - We consider the Blume-Capel model in the scaling limit to realize the thermal perturbation of the tricritical Ising fixed point. We develop a numerical scaling limit extrapolation for one-point functions and Rényi entropies in the ground state. In a mass quench scenario, we found long-lived oscillations despite the absence of explicit spin-flip symmetry breaking or confining potential. We construct form factors of branch-point twist fields in the paramagnetic phase. In the scaling limit of small quenches, we verify form factor predictions for the energy density and leading magnetic field using the dynamics of one-point functions, and branch-point twist fields using the dynamics of Rényi entropies.
ER  -

@Article{10.21468/SciPostPhys.20.2.030,
	title={{Entanglement and quench dynamics in the thermally perturbed tricritical fixed point}},
	author={Csilla Király and Máté Lencsés},
	journal={SciPost Phys.},
	volume={20},
	pages={030},
	year={2026},
	publisher={SciPost},
	doi={10.21468/SciPostPhys.20.2.030},
	url={https://scipost.org/10.21468/SciPostPhys.20.2.030},
}