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17 papers · 1 filter
Flux tube counting or Casimir scaling
Sedigheh Deldar, Shahnoosh Rafibakhsh
QCD confines quarks in all representations. From lattice calculations and fat center vortices model, we discuss that the coefficient of the linear term in the potential is proporti…
Massive spinor fields in flat spacetimes with non-trivial topology
N. Ahmadi, M. Nouri-Zonoz
The vacuum expectation value of the stress-energy tensor is calculated for spin massive fields in several multiply connected flat spacetimes. We examine the physical eff…
Directed Ligand Passage Over the Surface of Diffusion-Controlled Enzymes: A Cellular Automata Model
Mehrdad Ghaemi, Nasrollah Rezaei-Ghaleh, Mohammad-Nabi Sarbolouki
The rate-limiting step of some enzymatic reactions is a physical step, i.e. diffusion. The efficiency of such reactions can be improved through an increase in the arrival rate of t…
Confinement and fat-center-vortices model
Sedigheh Deldar
In this paper I review shortly potentials obtained for SU(2), SU(3) and SU(4) static sources from fat-center-vortices model. Results confirm the confinement of quarks in all three…
with Effective Field Theory
H. Sadeghi, S. Bayegan
The cross section of neutron-deuteron radiative capture is calculated at energies relevant to Big-Bang nucleosynthesis ( Kev) with pionless Ef…
SU(4) string tensions from the fat-center-vortices model
Sedigheh Deldar, Shahnoosh Rafibakhsh
The thick- or fat-center-vortices model has been applied to a calculation of the potentials between static sources of various SU(4) representations. For intermediate distances, a l…