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Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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21 papers · 1 filter
The Two-Body Momentum Distribution in Finite Nuclei
P. Papakonstantinou, E. Mavrommatis, T. S. Kosmas
The two-body momentum distribution n2(p1,p2) of nuclei is studied. First, a compact analytical expression is derived for Z=N l-closed nuclei, within the context of the independent-…
D-branes and the Standard Model
I. Antoniadis, E. Kiritsis, J. Rizos +1
We perform a systematic study of the Standard Model embedding in a D-brane configuration of type I string theory at the TeV scale. We end up with an attractive model and we study s…
Neutrinoless double beta decay from a modern perspective
J. D. Vergados
Neutrinoless double beta decay is a very important process both from the particle and nuclear physics point of view. From the elementary particle point of view it pops up in almost…
Non-Collapsing Membrane Instantons in Higher Dimensions
E. G. Floratos, G. K. Leontaris
We introduce a particular embedding of seven dimensional self-duality membrane equations in C^3\times R which breaks G_2 invariance down to SU(3). The world-volume membrane instant…
On Nonstandard Vacuua in Minimal Supergravity Models
D. V. Gioutsos, C. E. Vayonakis
The plethora of scalar fields participating in the formulation of a softly broken supersymmetric theory can threat the stability of the standard vacuum. The generic situation is tw…
Schwarzschild Black Branes and Strings in higher-dimensional Brane Worlds
P. Kanti, I. Olasagasti, K. Tamvakis
We consider branes embedded in spacetimes of codimension one and two, with a warped metric tensor for the subspace parallel to the brane. We study a variety of brane-world solution…
Noncommuting Gauge Fields as a Lagrange Fluid
R. Jackiw, S. -Y. Pi, A. P. Polychronakos
The Lagrange description of an ideal fluid gives rise in a natural way to a gauge potential and a Poisson structure that are classical precursors of analogous noncommuting entities…
Spectral Statistics in Chiral-Orthogonal Disordered Systems
S. N. Evangelou, D. E. Katsanos
We describe the singularities in the averaged density of states and the corresponding statistics of the energy levels in two- (2D) and three-dimensional (3D) chiral symmetric and t…
Exact Solutions and the Cosmological Constant Problem in Dilatonic-Domain-Wall Higher-Curvature String Gravity
Nick E. Mavromatos, John Rizos
In this article we extend previous work by the authors, and elaborate further on the structure of the general solution to the graviton and dilaton equations of motion in brane worl…
Graviton localization and Newton law for a dS_4 brane in 5D bulk
A. Kehagias, K. Tamvakis
We consider an dS_4 brane embedded in a five-dimensional bulk with a positive, vanishing or negative bulk cosmological constant and derive the localized graviton spectrum that cons…
Theoretical Directional and Modulated Rates for Direct SUSY Dark Matter Detection
J. D. Vergados
Exotic dark matter together with the vacuum energy (cosmological constant) seem to dominate in the flat Universe. Thus direct dark matter detection is central to particle physics a…
Five-Brane Configurations without a Strong Coupling Regime
E. Kiritsis, C. Kounnas, P. M. Petropoulos +1
Five-brane distributions with no strong coupling problems and high symmetry are studied. The simplest configuration corresponds to a spherical shell of branes with S^3 geometry and…
Anomalous U(1)s in Type I superstring vacua
I. Antoniadis, E. Kiritsis, J. Rizos
We perform a systematic string computation of the masses of anomalous U(1) gauge bosons in four-dimensional orientifold vacua, and we study their localization properties in the int…
Cosmological Effects of Radion Oscillations
L. Perivolaropoulos, C. Sourdis
We show that the redshift of pressureless matter density due to the expansion of the universe generically induces small oscillations in the stabilized radius of extra dimensions (t…
The exotic double-charge exchange muon positron conversion in nuclei
P. C. Divari, J. D. Vergados, T. S. Kosmas +1
The formalism for the neutrinoless muon positron conversion is investigated in detail and the relevant nuclear matrix elements for light intermediate neutrinos in the case of the e…
New Velocity Distribution in the Context of the Eddington Theory
J. D. Vergados, D. Owen
Exotic dark matter together with the vacuum energy (associated with the cosmological constant) seem to dominate the Universe. Thus its direct detection is central to particle physi…
The multilevel trigger system of the DIRAC experiment
L. Afanasyev, M. Gallas, D. Goldin +14
The multilevel trigger system of the DIRAC experiment at CERN is presented. It includes a fast first level trigger as well as various trigger processors to select events with a pai…
Closed expressions for the nuclear moments in semi-leptonic processes
V. Ch. Chasioti, T. S. Kosmas
We discuss a general formalism needed for a unified description of the weak and electromagnetic processes in nuclei which is based on the multipole decomposition of the hadronic cu…
Theoretical Rates for Direct Detection of SUSY Dark Matter
J. D. Vergados
Exotic dark matter together with the vacuum energy (associated with the cosmological constant) seem to dominate in the Universe. Thus its direct detection is central to particle ph…
SUSY Dark Matter in the Universe- Theoretical Direct Detection Rates
J. D. Vergados
Exotic dark matter together with the vacuum energy or cosmological constant seem to dominate in the Universe. An even higher density of such matter seems to be gravitationally trap…
Quantum mechanics on noncommutative Riemann surfaces
Bogdan Morariu, Alexios P. Polychronakos
We study the quantum mechanics of a charged particle on a constant curvature noncommutative Riemann surface in the presence of a constant magnetic field. We formulate the problem b…