794 citations · 3.1k across the 96 of their papers we have counts for
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Quantum spherical spin models
R. Serral Gracia, Th. M. Nieuwenhuizen
A recently introduced class of quantum spherical spin models is considered in detail. Since the spherical constraint already contains a kinetic part, the Hamiltonian need not have…
Comment on ``Experimental violations of the second law of thermodynamics for small systems and short timescales''
Theo M. Nieuwenhuizen, Armen E. Allahverdyan
The experimental verification of the Fluctuation Theorem by Wang et al. is not a violation but even a confirmation of the second law, resulting from their observations in a proper…
Microscopic Theory for Multiple Light Scattering in Magnetic Fields
Bart A. van Tiggelen, Roger Maynard, Theo M. Nieuwenhuizen
We present a microscopic theory for multiple light scattering occurring in inhomogeneous 3D media subject to an external magnetic field. Magneto-optical effects (the Faraday effect…
Complexity as the driving force for dynamical glassy transitions
Th. M. Nieuwenhuizen
Aspects of the dynamical glass transition are considered within a mean field spin glass model. At the dynamical transition the the system condenses in a state of lower entropy. The…
A puzzle on fluctuations of weights in spin glasses
Th. M. Nieuwenhuizen
In certain mean field models for spin glasses there occurs a one step replica symmetry breaking pattern. As an example of general -corrections in such systems, the fluctuation…
Exactly solvable model of a quantum spin glass
Th. M. Nieuwenhuizen
A mean field spherical model with random couplings between pairs, quartets, and possibly higher multiplets of spins is considered. It has the same critical behavior as the Sherring…