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1,880 Result(s)
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Chapter
Quantum Origin of Noise and Fluctuations in Cosmology
We address two basic issues in the theory of galaxy formation from fluctuations of quantum fields: 1) the nature and origin of noise and fluctuations and 2) the conditions for using a classical stochastic equa...
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Chapter
R-W Cosmological Solution for Polytropes
Einstein’s theory of general relativity has given modern physics a consistent and fruitful framwork in which to study cosmology.
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Chapter and Conference Paper
The Virgo Project
The Virgo project is a Italian-French collaboration aiming at the construction of a long baseline interferometric antenna for the detection of gravitational radiation signals of cosmic origin. We describe the ...
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Article
Quantum Group Actions on the Cuntz Algebra
The Cuntz Algebra carries in a natural way the structure of a module algebra over the quantized universal envelo** algebra U q ...
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Chapter
Cold Atom Clocks, Precision Oscillators and Fundamental Tests
We describe two experimental tests of the Equivalence Principle that are based on frequency measurements between precision oscillators and/or highly accurate atomic frequency standards. Based on comparisons be...
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Article
Phase-matched third-harmonic generation in anisotropically nanostructured silicon
A frequency-tunable laser system based on an optical parametric oscillator is used to implement phase-matched third-harmonic generation in porous silicon films with a strong form birefringence. Phase matching,...
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Article
Controlling chaos in a Bose-Einstein condensate loaded into a moving optical lattice potential
The spatial structure of a Bose-Einstein condensate loaded into an optical lattice potential is investigated, and spatially chaotic distributions of the condensates are revealed. By means of changing of the s-...
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Article
BCFW recursion relation with nonzero boundary contribution
The appearance of BCFW on-shell recursion relation has deepen our understanding of quantum field theory, especially the one with gauge boson and graviton. To be able to write the BCFW recursion relation, the k...
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Article
Open AccessCombined measurement and QCD analysis of the inclusive e ± p scattering cross sections at HERA
A combination is presented of the inclusive deep inelastic cross sections measured by the H1 and ZEUS Collaborations in neutral and charged current unpolarised e ±
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Article
Open AccessTransverse-momentum and pseudorapidity distributions of charged hadrons in pp collisions at \(\sqrt{s} = 0.9 \) and 2.36 TeV
Measurements of inclusive charged-hadron transverse-momentum and pseudorapidity distributions are presented for proton-proton collisions at ...
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Article
Open AccessEvents with an isolated lepton and missing transverse momentum and measurement of W production at HERA
A search for events containing an isolated electron or muon and missing transverse momentum produced in e ± p collisions is performed with the H1 and ZEUS detectors...
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Article
Leptogenesis as a common origin for matter and dark matter
We propose a model of asymmetric dark matter (DM) where the dark sector is an identical copy of both forces and matter of the standard model (SM) as in the mirror universe models discussed in literature. In ad...
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Article
Non-standard interactions versus non-unitary lepton flavor mixing at a neutrino factory
The impact of heavy mediators on neutrino oscillations is typically described by non-standard four-fermion interactions (NSIs) or non-unitarity (NU). We focus on leptonic dimension-six effective operators whic...
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Article
Open AccessDiffractive electroproduction of ρ and ϕ mesons at HERA
Diffractive electroproduction of ρ and ϕ mesons is measured at HERA with the H1 detector in the elastic and proton dissociative channels. The data correspond to an integrated luminosity of 51 pb−1. About 10500 ρ ...
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Article
Linear confinement for mesons and nucleons in AdS/QCD
By using a new parametrization of the dilaton field and including a cubic term in the bulk scalar potential, we realize linear confinement in both meson and nucleon sectors within the framework of soft-wall Ad...
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Article
Open AccessSearch for neutral Higgs bosons decaying into four taus at LEP2
A search for the production and non-standard decay of a Higgs boson, h, into four taus through intermediate pseudoscalars, a, is conducted on 683 pb−1 of data collected by the ALEPH experiment at centre-of-mass e...
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Article
MSSM in view of PAMELA and Fermi-LAT
We take the MSSM as a complete theory of low energy phenomena, including neutrino masses and mixings. This immediately implies that the gravitino is the only possible dark matter candidate. We study the implic...
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Article
QCD-like theories at nonzero temperature and density
We investigate the properties of hot and/or dense matter in QCD-like theories with quarks in a (pseudo)real representation of the gauge group using the Nambu-Jona-Lasinio model. The gauge dynamics is modeled u...
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Article
Dual identities inside the gluon and the graviton scattering amplitudes
Recently, Bern, Carrasco and Johansson conjectured dual identities inside the gluon tree scattering amplitudes. In this paper, we use the properties of the heterotic string and open string tree scattering ampl...
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Article
Consistency conditions on S-matrix of spin 1 massless particles
Motivated by new techniques in the computation of scattering amplitudes of massless particles in four dimensions, like BCFW recursion relations, the question that how much structure of the S-matrix can be dete...