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cond-mat.mes-hall2002
Large-field versus discontinuous instantons in spin orientation tunneling
Anupam Garg, Ersin Kececioglu
Tunnel splitting oscillations in magnetic molecules are reconsidered within the simplest model for the problem, which does not contain fourth order anisotropy. It is shown that at…
cond-mat.mes-hall2001★ 27 cited
SU(2) instantons with boundary jumps and spin tunneling in magnetic molecules
Ersin Kececioglu, Anupam Garg
Coherent state path integrals are shown in general to contain instantons with jumps at the boundaries, i.e., with boundary points lying outside classical parameter or phase space.…