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Quantum approach to nucleation times of kinetic Ising ferromagnets
Statistical Mechanics · Submitted 14 Jan 2005
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim It is argued that the relaxation times already provide a measure of actual nucleation lifetimes under finite fields.
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The abstract, sentence by sentence
Low temperature dynamics of Ising ferromagnets under finite magnetic fields are studied in terms of quantum spin representations of stochastic evolution operators. These are constructed for the Glauber dynamic as well as for a modification of this latter, introduced by K. Park {\it et al.} in Phys. Rev. Lett. {\bf 92}, 015701 (2004). In both cases the relaxation time after a field quench is evaluated both numerically and analytically using the spectrum gap of the corresponding operators. The numerical work employs standard recursive techniques following a symmetrization of the evolution operator accomplished by a non-unitary spin rotation. The analytical approach uses low temperature limits to identify dominant terms in the eigenvalue problem. It is argued that the relaxation times already provide a measure of actual nucleation lifetimes under finite fields. The approach is applied to square, triangular and honeycomb lattices.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | Low temperature dynamics of Ising ferromagnets under finite magnetic fields are studied in terms of quantum spin representations of stochastic evolution operators. | contribution 0.85 | 0.81 | 0.05 | asserted 0.99 |
| s1 | These are constructed for the Glauber dynamic as well as for a modification of this latter, introduced by K. | method 0.86 | 0.71 | 0.03 | asserted 0.97 |
| s2 | Park {\it et al.} in Phys. Rev. Lett. {\bf 92}, 015701 (2004). | background 0.90 | 0.05 | 0.02 | unclear 0.77 |
| s3 | In both cases the relaxation time after a field quench is evaluated both numerically and analytically using the spectrum gap of the corresponding operators. | method 0.88 | 0.91 | 0.09 | asserted 1.00 |
| s4 | The numerical work employs standard recursive techniques following a symmetrization of the evolution operator accomplished by a non-unitary spin rotation. | method 1.00 | 0.83 | 0.02 | asserted 1.00 |
| s5 | The analytical approach uses low temperature limits to identify dominant terms in the eigenvalue problem. | method 1.00 | 0.86 | 0.04 | asserted 0.99 |
| s6 | It is argued that the relaxation times already provide a measure of actual nucleation lifetimes under finite fields. | interpretation 1.00 | 0.72 | 0.69 | asserted 0.47 |
| s7 | The approach is applied to square, triangular and honeycomb lattices. | contribution 0.81 | 0.87 | 0.05 | asserted 0.99 |
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The paper
Original abstract
Low temperature dynamics of Ising ferromagnets under finite magnetic fields are studied in terms of quantum spin representations of stochastic evolution operators. These are constructed for the Glauber dynamic as well as for a modification of this latter, introduced by K. Park {\it et al.} in Phys. Rev. Lett. {\bf 92}, 015701 (2004). In both cases the relaxation time after a field quench is evaluated both numerically and analytically using the spectrum gap of the corresponding operators. The numerical work employs standard recursive techniques following a symmetrization of the evolution operator accomplished by a non-unitary spin rotation. The analytical approach uses low temperature limits to identify dominant terms in the eigenvalue problem. It is argued that the relaxation times already provide a measure of actual nucleation lifetimes under finite fields. The approach is applied to square, triangular and honeycomb lattices.
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