29 citations
5 papers
Exact Static Solutions for Scalar Fields Coupled to Gravity in -Dimensions
Ayse H. Bilge, Durmus Daghan
Einstein's field equations for a spherically symmetric metric coupled to a massless scalar field are reduced to a system effectively of second order in time, in terms of the variab…
Multicritical Point Relations in Three Dual Pairs of Hierarchical-Lattice Ising Spin-Glasses
Michael Hinczewski, A. Nihat Berker
The Ising spin-glasses are investigated on three dual pairs of hierarchical lattices, using exact renormalization-group transformation of the quenched bond probability distribution…
d=3 Anisotropic and d=2 tJ Models: Phase Diagrams, Thermodynamic Properties, and Chemical Potential Shift
Michael Hinczewski, A. Nihat Berker
The anisotropic d=3 tJ model is studied by renormalization-group theory, yielding the evolution of the system as interplane coupling is varied from the isotropic three-dimensional…
Two Superconducting Phases in the d=3 Hubbard Model: Phase Diagram and Specific Heat from Renormalization-Group Calculations
Michael Hinczewski, A. Nihat Berker
The phase diagram of the d=3 Hubbard model is calculated as a function of temperature and electron density n_i, in the full range of densities between 0 and 2 electrons per site, u…
Analytical Solution of a Stochastic Content Based Network Model
Muhittin Mungan, Alkan Kabakcioglu, Duygu Balcan +1
We define and completely solve a content-based directed network whose nodes consist of random words and an adjacency rule involving perfect or approximate matches, for an alphabet…