Journal
SCIPOST PHYSICS
Volume 12, Issue 2, Pages -Publisher
SCIPOST FOUNDATION
DOI: 10.21468/SciPostPhys.12.2.061
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Funding
- National Research, Development and Innovation Office (NKFIH) through the OTKA Grants [FK 132146, K 138606]
- Hungarian Quantum Technology National Excellence Program [2017-1.2.1-NKP-2017-00001]
- Fund TKP2020 IES under the auspices of the Ministry for Innovation and Technology [BME-IE-NAT]
- Quantum Information National Laboratory of Hungary
- Ministry for Innovation and Technology from National Research, Development and Innovation Fund [UNKP-21-4]
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We studied the decay of the false vacuum in an anti-confining regime of the Ising spin chain during a quantum quench. Despite the repulsive effective potential between domain walls, the time evolution of correlations still shows a suppression of the light cone and a reduction of vacuum decay.
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 via suppression of the growth of nucleated bubbles. The suppression of the bubble growth is a lattice effect, and can be assigned to emergent Bloch oscillations.
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