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12 papers · 1 filter
Analytical calculation of critical temperatures in some spin systems
Z. Burda, J. Wosiek
A new method for locating analytically critical temperatures is discussed. It is exact for selfdual systems. When applied the two coupled layers of Ising spins it deviates from our…
Locating analytically critical temperature in some statistical systems
J. Wosiek
We have found a simple criterion which allows for the straightforward determination of the order-disorder critical temperatures. The method reproduces exactly results known for the…
Penrose Inequality for Gravitational Waves
Janusz Karkowski, Piotr Koc, Zdobyslaw Swierczynski
We investigate axially symmetric asymptotically flat vacuum self-gravitating system. A class of initial data with apparent horizon was numerically constructed. The examined solutio…
On dynamics of cylindrical and spherical relativistic domain walls of finite thickness
H. Arodz, A. L. Larsen
Dynamics of cylindrical and spherical relativistic domain walls is investigated with the help of a new method based on Taylor expansion of the scalar field in a vicinity of the cor…
Metric On Quantum Spaes
Andrzej Sitarz
We introduce the analogue of the metric tensor in case of -deformed differential calculus. We analyse the consequences of the existence of such metric, showing that this enforce…
Finite size scaling analysis of intermittency moments in the two dimensional Ising model
Z. Burda, K. Zalewski, R. Peschanski +1
Finite size scaling is shown to work very well for the block variables used in intermittency studies on a 2-d Ising lattice. The intermittency exponents so derived exhibit the expe…