30 60 97 v 1 2 1 Ju n 20 03 Notes on Choptuik Phenomena

ar X iv : m at h - ph / 0 30 60 72 v 1 2 7 Ju n 20 03 Symmetries and currents of massless neutrino fields , electromagnetic and graviton fields

A recent complete, explicit classification of all locally constructed symmetries and currents for free spinorial massless spin s fields on Minkowski space is summarized and extended to give a classification of all covariant symmetry operators and conserved tensors. The results, for physically interesting cases, are also presented in tensorial form for electromagnetic and graviton fields (s = 1,...

ar X iv : m at h - ph / 0 30 60 62 v 1 2 5 Ju n 20 03 VECTOR COHERENT STATES WITH AN UNBOUNDED INVERSE FRAME OPERATOR

We present a class of vector coherent states in the domain D × D × .... × D (n-copies), where D is the complex unit disc, using a specific class of hermitian matrices. Further, as an example, we build vector coherent states in the unit disc by considering the unit disc as the homogeneous space of the group SU (1, 1).

0 30 60 85 v 1 2 9 Ju n 20 03 FINITE TEMPERATURE STUDY OF NUCLEAR MATTER IN SU ( 2 ) CHIRAL SIGMA MODEL

We study here the equation of state of symmetric nuclear matter at finite temperatures using a modified SU(2) Chiral Sigma model. The effect of temperature on effective mass, entropy and binding energy is also studied. The liquid-gas phase transition is investigated and the critical values of temperature, density and pressure are calculated.

ar X iv : h ep - l at / 0 30 60 33 v 1 2 5 Ju n 20 03 Fermions in 2 D Lorentzian Quantum Gravity

We implement Wilson fermions on 2D Lorentzian triangulation and determine the spectrum of the Dirac-Wilson operator. We compare it to the spectrum of the corresponding operator in the Euclidean background. We use fermionic particle to probe the fractal properties of Lorentzian gravity coupled to c = 1/2 and c = 4 matter. We numerically determine the scaling exponent of the mass gap M ∼ N −1/dH ...

ar X iv : n uc l - ex / 0 30 50 34 v 2 1 4 Ju n 20 03 ρ ( 770 ) 0 and f 0 ( 980 ) Production in Au + Au and pp