TY - JOUR
T1 - Level statistics in a Heisenberg chain with random magnetic field
AU - Avishai, Y.
AU - Avishai, Y.
AU - Richert, J.
AU - Berkovits, R.
PY - 2002/8/1
Y1 - 2002/8/1
N2 - Level statistics is calculated for a Heisenberg spin chain with a random magnetic field, and shown to follow that of random-matrix theory pertaining to Gaussian orthogonal ensemble, due to nonconventional time-reversal invariance. However, when a bona fide time reversal violation term is added, such as three spin interaction, the statistics follows that pertaining to Gaussian unitary ensemble.
AB - Level statistics is calculated for a Heisenberg spin chain with a random magnetic field, and shown to follow that of random-matrix theory pertaining to Gaussian orthogonal ensemble, due to nonconventional time-reversal invariance. However, when a bona fide time reversal violation term is added, such as three spin interaction, the statistics follows that pertaining to Gaussian unitary ensemble.
UR - http://www.scopus.com/inward/record.url?scp=0036694665&partnerID=8YFLogxK
U2 - 10.1103/physrevb.66.052416
DO - 10.1103/physrevb.66.052416
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AN - SCOPUS:0036694665
SN - 0163-1829
VL - 66
SP - 524161
EP - 524164
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 5
M1 - 052416
ER -