Begg, SE;
Green, AG;
Bhaseen, MJ;
(2021)
Time-evolving Weiss fields in the stochastic approach to quantum spins.
Physical Review B
, 104
(2)
, Article 024408. 10.1103/physrevb.104.024408.
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Abstract
We investigate nonequilibrium quantum spin systems via an exact mapping to stochastic differential equations. This description is invariant under a shift in the mean of the Gaussian noise. We show that one can extend the simulation time for real-time dynamics in one and two dimensions by a judicious choice of this shift. This can be updated dynamically in order to reduce the impact of stochastic fluctuations. We discuss the connection to drift gauges in the gauge-P literature.
| Type: | Article |
|---|---|
| Title: | Time-evolving Weiss fields in the stochastic approach to quantum spins |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/physrevb.104.024408 |
| Publisher version: | https://doi.org/10.1103/PhysRevB.104.024408 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10130935 |
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