The standard SU (2)�U(1) model in an external magnetic field at finite temperature and nonzero chemical potential
Zeitschrift f�r Physik C Particles and Fields Springer Science and Business Media LLC 61:2 (1994) 285-291
Baryon Magnetic Moments in a Simultaneous Expansion in $1/N$ and $m_s$
(1994)
Multiple Ising Spins Coupled to 2d Quantum Gravity
ArXiv hep-th/9404174 (1994)
Abstract:
We study a model in which p independent Ising spins are coupled to 2d quantum gravity (in the form of dynamical planar phi-cubed graphs). Consideration is given to the p tends to infinity limit in which the partition function becomes dominated by certain graphs; we identify most of these graphs. A truncated model is solved exactly providing information about the behaviour of the full model in the limit of small beta. Finally, we derive a bound for the critical value of the coupling constant, beta_c and examine the magnetization transition in the limit p tends to zero.RANDOM SURFACES AND LATTICE QUANTUM-GRAVITY
NUCL PHYS B (1994) 15-28