Bloch oscillations and the lack of the decay of the false vacuum in a one-dimensional quantum spin chain
O. Pomponio, M. A. Werner, G. Zarand, G. Takacs
SciPost Phys. 12, 061 (2022) · published 15 February 2022
- doi: 10.21468/SciPostPhys.12.2.061
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Abstract
We consider the decay of the false vacuum, realised within a quantum quench into an anti-confining regime of the Ising spin chain with a magnetic field opposite to the initial magnetisation. Although the effective linear potential between the domain walls is repulsive, the time evolution of correlations still shows a suppression of the light cone and a reduction of vacuum decay. The suppressed decay is a lattice effect, and can be assigned to emergent Bloch oscillations.
Cited by 16
Authors / Affiliations: mappings to Contributors and Organizations
See all Organizations.- 1 2 Octavio Pomponio,
- 3 Miklós Antal Werner,
- 3 Gergely Zaránd,
- 3 Gábor Takács
- 1 INFN Sezione di Bologna / INFN Bologna [INFN Bologna]
- 2 Università di Bologna / University of Bologna [UNIBO]
- 3 Budapesti Műszaki és Gazdaságtudományi Egyetem / Budapest University of Technology and Economics [BUTE]
Funders for the research work leading to this publication
- Emberi Eroforrások Minisztériuma (through Organization: Emberi Erőforrások Minisztérium / Ministry of Human Capacities [Emmi])
- Nemzeti Kutatási, Fejlesztési és Innovációs Hivatal / National Research, Development and Innovation Office [NKFIH]