Luca Salasnich
Quantum Chaos in a Yang--Mills--Higgs System 
(18K, LaTex)

ABSTRACT.  We study the energy fluctuations 
of a spatially homogeneous SU(2) Yang--Mills--Higgs system. 
In particular, we analyze the nearest--neighbour spacing 
distribution which shows 
a Wigner--Poisson transition by increasing the value of the Higgs 
field in the vacuum. This transition is a clear quantum signature 
of the classical chaos--order transition of the system.  
(2 figures available upon request, accepted for publication in Modern 
Physics Letters A).