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- European Organization for Nuclear ResearchCH65 papers
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9 papers · 1 filter
Exact general relativistic lensing versus thin lens approximation: the crucial role of the void
M. Parsi Mood, Javad T. Firouzjaee, Reza Mansouri
We have used an exact general relativistic model structure within a FRW cosmological background based on a LTB metric to study the gravitational lensing of a cosmological structure…
On the regularity and Koszulness of modules over local rings
Rasoul Ahangari Maleki
Koszul modules over Noetherian local rings were introduced by Herzog and Iyengar and they possess good homological properties, for instance their Poincare' series is rational.…
On monomial curves obtained by gluing
Raheleh Jafari, Santiago Zarzuela Armengou
We study arithmetic properties of tangent cones associated to affine monomial curves, using the concept of gluing. In particular we characterize the Cohen-Macaulay and Gorenstein p…
Two-flavor color superconductivity at finite temperature, chemical potential and in the presence of strong magnetic fields
Sh. Fayazbakhsh, N. Sadooghi
Utilizing an extended two-flavor Nambu-Jona Lasinio (NJL) model, we review some of the effects of external magnetic fields on two-flavor color superconducting phase (2SC) at modera…
Holographic Entanglement Entropy for Excited States in Two Dimensional CFT
Amin Faraji Astaneh, Amir Esmaeil Mosaffa
We use holographic methods to study the entanglement entropy for excited states in a two dimensional conformal field theory. The entangling area is a single interval and the excita…
Stone-Wales defects can cause a metal-semiconductor transition in carbon nanotubes depending on their orientation
P. Partovi-Azar, A. Namiranian
It has been shown that the two different orientations of Stone-Wales (SW) defects, i.e. longitudinal and circumferential SW defects, on carbon nanotubes (CNTs) result in two differ…