2.4k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- European Organization for Nuclear ResearchCH1.3k papers
- National and Kapodistrian University of AthensGR1.3k papers
- National Institute of Chemical Physics and BiophysicsEE1.3k papers
- University of CyprusCY1.3k papers
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- California Institute of TechnologyUS1.3k papers
- Charles UniversityCZ1.3k papers
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- Tata Institute of Fundamental ResearchIN1.2k papers
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30 papers · 1 filter
Short pulse equations and localized structures in frequency band gaps of nonlinear metamaterials
N. L. Tsitsas, T. P. Horikis, Y. Shen +3
We consider short pulse propagation in nonlinear metamaterials characterized by a weak Kerr-type nonlinearity in their dielectric response. In the frequency "band gaps" (where line…
Radiation hardness qualification of PbWO4 scintillation crystals for the CMS Electromagnetic Calorimeter
The CMS Electromagnetic Calorimeter Group, P. Adzic, N. Almeida +267
Ensuring the radiation hardness of PbWO4 crystals was one of the main priorities during the construction of the electromagnetic calorimeter of the CMS experiment at CERN. The produ…
Hierarchical Neutrino Masses and Mixing in Flipped-SU(5)
J. Rizos, K. Tamvakis
We consider the problem of neutrino masses and mixing in the framework of flipped SU(5). The right-handed neutrino mass, generated through the operation of a seesaw mechanism by a…
Inflation with the right-handed sneutrino revisited
O. Efthimiou, K. Tamvakis
We consider an extension of nuMSSM with an extra U(1) that realizes D-term inflation driven by the right-handed sneutrino. Non-renormalizable terms in the Kahler potential and the…
Gauge coupling flux thresholds, exotic matter and the unification scale in F-SU(5) GUT
G. K. Leontaris, N. D. Tracas
We explore the gauge coupling relations and the unification scale in F-theory SU(5) GUT broken down to the Standard Model by an internal U(1)Y gauge flux. We consider variants with…
Pionic Contribution to Neutrinoless Double Beta Decay
J. D. Vergados, Amand Faessler, H. Toki
It is well known that neutrinoless double decay is going to play a crucial role in settling the neutrino properties, which cannot be extracted from the neutrino oscillation data. I…
Exophobic Quasi-Realistic Heterotic String Vacua
Benjamin Assel, Kyriakos Christodoulides, Alon E. Faraggi +2
We demonstrate the existence of heterotic-string vacua that are free of massless exotic fields. The need to break the non-Abelian GUT symmetries in k=1 heterotic-string models by W…
Charge transport in a single superconducting tin nanowire encapsulated in a multiwalled carbon nanotube
Nikolaos Tombros, Luuk Buit, Imad Arfaoui +6
The charge transport properties of single superconducting tin nanowires, encapsulated by multiwalled carbon nanotubes have been investigated by multi-probe measurements. The multiw…
Supersymmetric Inflation with the Ordinary Higgs?
K. Tamvakis
We consider a model of D-term inflation in which the inflaton coincides with the standard Higgs doublet. Non-renormalizable terms are controlled by a discrete R-symmetry of the sup…
PPN Parameter and Solar System Constraints of Massive Brans-Dicke Theories
L. Perivolaropoulos
Previous solar system constraints of the Brans-Dicke (BD) parameter have either ignored the effects of the scalar field potential (mass terms) or assumed a highly massive scala…
The case for a directional dark matter detector and the status of current experimental efforts
S. Ahlen, N. Afshordi, J. B. R. Battat +109
We present the case for a dark matter detector with directional sensitivity. This document was developed at the 2009 CYGNUS workshop on directional dark matter detection, and conta…
On the Jacobian of minimal graphs in R^4
Th. Hasanis, A. Savas-Halilaj, Th. Vlachos
We provide a characterization for complex analytic curves among two-dimensional minimal graphs in via the Jacobian
139La NMR evidence for phase solitons in the ground state of overdoped manganites
D. Koumoulis, N. Panopoulos, A. Reyes +6
Hole doped transition metal oxides are famous due to their extraordinary charge transport properties, such as high temperature superconductivity (cuprates) and colossal magnetoresi…
The 14C(n,g) cross section between 10 keV and 1 MeV
R. Reifarth, M. Heil, C. Forssen +14
The neutron capture cross section of 14C is of relevance for several nucleosynthesis scenarios such as inhomogeneous Big Bang models, neutron induced CNO cycles, and neutrino drive…
Comparison of Recent SnIa datasets
J. C. Bueno Sanchez, S. Nesseris, L. Perivolaropoulos
We rank the six latest Type Ia supernova (SnIa) datasets (Constitution (C), Union (U), ESSENCE (Davis) (E), Gold06 (G), SNLS 1yr (S) and SDSS-II (D)) in the context of the Chevalie…
D-brane Inspired Fermion Mass Textures
G. K. Leontaris, N. D. Vlachos
In this paper, the issues of the quark mass hierarchies and the Cabbibo Kobayashi Maskawa mixing are analyzed in a class of intersecting D-brane configurations with Standard Model…
Matter-wave dark solitons: stochastic vs. analytical results
S. P. Cockburn, H. E. Nistazakis, T. P. Horikis +3
The dynamics of dark matter-wave solitons in elongated atomic condensates are discussed at finite temperatures. Simulations with the stochastic Gross-Pitaevskii equation reveal a n…
The spherical collapse model and cluster formation beyond the cosmology: Indications for a clustered dark energy?
S. Basilakos, J. C. Bueno Sanchez, Leandros Perivolaropoulos
We generalize the small scale dynamics of the universe by taking into account models with an equation of state which evolves with time, and provide a complete formulation of the cl…
Dynamical oscillations in nonlinear optical media
Theodoros P. Horikis, Hector E. Nistazakis
The spatial dynamics of pulses in Kerr media with parabolic index profile are examined. It is found that when diffraction and graded-index have opposite signs propagating pulses ex…
Searching for Dark Matter- Theoretical Rates and Exclusion Plots due to the Spin
J. D. Vergados
The recent WMAP data have confirmed that exotic dark matter together with the vacuum energy (cosmological constant) dominate in the flat Universe. The nature of the dark matter con…
Angular profile of emission of non-zero spin fields from a higher-dimensional black hole
M. Casals, S. R. Dolan, P. Kanti +1
Recent works have included the effect of rotation on simulations of black hole events at the LHC, showing that the angular momentum of the black hole cannot be ignored and it makes…
Searching for Secluded Dark Matter via Direct Detection of Recoiling Nuclei as well as Low Energy Electrons
A. Dedes, I. Giomataris, K. Suxho +1
Motivated by recent cosmic ray experimental results there has been a proposition for a scenario where a secluded dark matter particle annihilates, primarily, into Standard Model le…
Graviton Emission in the Bulk by a Simply Rotating Black Hole
P. Kanti, Hideo Kodama, R. A. Konoplya +2
In this work, we study the emission of tensor-type gravitational degrees of freedom from a higher-dimensional, simply rotating black hole in the bulk. The decoupled radial part of…
Instanton induced charged fermion and neutrino masses in a minimal Standard Model scenario from intersecting D-branes
G. K. Leontaris
String instanton Yukawa corrections from Euclidean D-branes are investigated in an effective Standard Model theory obtained from the minimal U(3)xU(2)xU(1) D-brane configuration. I…