Symmetry Breaking Bias and the Dynamics of a Quantum Phase Transition
Journal Article
·
· Physical Review Letters
- Jagiellonian Univ., Krakow (Poland). Marian Smoluchowski Inst. of Physics
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
The Kibble-Zurek mechanism predicts the formation of topological defects and other excitations that quantify how much a quantum system driven across a quantum critical point fails to be adiabatic. We point out that, thanks to the divergent linear susceptibility at the critical point, even a tiny symmetry breaking bias can restore the adiabaticity. Furthermore, the minimal required bias scales like , where , , , are the critical exponents and is a quench time. We test this prediction by DMRG simulations of the quantum Ising chain. It is directly applicable to the recent emulation of quantum phase transition dynamics in the Ising chain with ultracold Rydberg atoms.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE Laboratory Directed Research and Development (LDRD) Program
- Grant/Contract Number:
- 89233218CNA000001
- OSTI ID:
- 1774425
- Report Number(s):
- LA-UR-19-23644; TRN: US2209780
- Journal Information:
- Physical Review Letters, Vol. 123, Issue 13; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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