Physical sciences topic list of research papers
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Instability of Schwarzschild–AdS black hole in Einstein–Weyl gravity
Abstract We investigate the classical stability of Schwarzschild–AdS black hole in a massive gravity theory of the Einstein–Weyl gravity. It turns out that the linearized Einstein tensor perturbations exhibit unstable modes featuring the...
2013 / Yun Soo Myung -
Determination of X-ray flux using silicon pin diodes2009 / Robin L. Owen, James M. Holton, Clemens Schulze-Briese, Elspeth F. Garman
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Spectral action and gravitational effects at the Planck scale
Abstract We discuss the possibility to extend the spectral action up to energy close to the Planck scale, taking also into account the gravitational effects given by graviton exchange. Including this contribution in the theory, the coupling constant ...
2014 / Agostino Devastato -
The sigma model on complex projective superspaces2010 / Constantin Candu, Vladimir Mitev, Thomas Quella, Hubert Saleur, Volker Schomerus
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Fast beam condition monitor for CMS: Performance and upgrade
Abstract The CMS beam and radiation monitoring subsystem BCM1F (Fast Beam Condition Monitor) consists of 8 individual diamond sensors situated around the beam pipe within the pixel detector volume, for the purpose of fast bunch-by-bunch monitoring...
2014 / Jessica L. Leonard, Alan Bell, Piotr Burtowy, Anne Dabrowski, Maria Hempel, et al. -
Three-loop field renormalization for scalar field theory with Lorentz violation
Abstract Applying the counterterm method in minimal subtraction scheme we calculate the three-loop quantum correction to field anomalous dimension in a Lorentz-violating O(N) self-interacting scalar field theory. We compute the Feynman diagrams...
2014 / Paulo R.S. Carvalho -
On the power counting in effective field theories
Abstract We discuss the systematics of power counting in general effective field theories, focusing on those that are nonrenormalizable at leading order. As an illuminating example we consider chiral perturbation theory gauged under the...
2014 / Gerhard Buchalla, Oscar Catà, Claudius Krause -
Simple parametrization of single- and two-nucleon separation energies in terms of the neutron to proton ratio N/Z
Abstract It is shown that single- and two-nucleon separation energies can be parametrized in a new way using the neutron to proton ratio N/Z and the mass number A. Very simple empirical formulas have been achieved using a least squares fit to all...
2002 / K Vogt, T Hartmann, A Zilges -
Scaling of hadron masses and widths in thermal models for ultrarelativistic heavy-ion collisions
Abstract By means of a simple rescaling, modifications of hadron masses and widths are incorporated into the thermal analysis of particle ratios in ultrarelativistic heavy-ion collisions. We find that moderate, up to 20%, changes of hadron masses do ...
2002 / Mariusz Michalec, Wojciech Florkowski, Wojciech Broniowski -
A new coupling potential for the analysis of deformed light heavy-ion reactions
Abstract A number of serious problems has continued to plague the study of the 16 O+28 Si, 12 C+24 Mg and ...
2002 / I Boztosun, W.D.M Rae -
Observable neutron–antineutron oscillations in seesaw models of neutrino mass
Abstract We show that in a large class of supersymmetric models with spontaneously broken B–L symmetry, neutron–antineutron oscillations occur at an observable level even though the scale of B–L breaking is very high, v ...
2002 / K.S Babu, R.N Mohapatra -
COBRA—double beta decay searches using CdTe detectors
Abstract A new approach (called COBRA) for investigating double beta decay using CdTe semiconductor detectors is proposed. This will allow simultaneous measurements of 5β − β −- and 4β ...
2002 / K Zuber -
Testing the Weisskopf–Wigner approximation by using neutral-meson–antimeson correlated states
Abstract We phenomenologically decompose the Weisskopf–Wigner approximation, as applied to the neutral flavoured meson (M 0) complexes, into three pieces and propose tests for these pieces. Our tests hold for general decay...
2002 / G.V. Dass, W. Grimus -
Massive charged scalar field in a Reissner–Nordstrom black hole background: quasinormal ringing
Abstract We compute characteristic (quasinormal) frequencies corresponding to decay of a massive charged scalar field in a Reissner–Nordstrom black hole background. It proves that, contrary to the behavior at very late times, at the stage of...
2002 / R.A Konoplya -
Improving bounds on γ in B±→DK± and B±,0→DXs±,0
Abstract In view of recent experimental progress in rate and CP asymmetry measurements in B ±→DK ±, we reconsider information on the weak phase γ which can be obtained from these processes. Model-independent ...
2003 / Michael Gronau -
Effective parameters representing a density-dependent pion–nucleus potential
Abstract We have shown that the s-wave pion–nucleus potential with medium-modified density-dependent parameters, such as b 0(ρ) and b 1(ρ), can be represented by a conventional form with constant parameters...
2003 / Toshimitsu Yamazaki, Satoru Hirenzaki -
Solving the BFKL equation in the next-to-leading approximation
Abstract The Balitsky–Fadin–Kuraev–Lipatov equation in the next-to-leading logarithmic approximation is solved using an iterative method. We derive the solution for forward scattering with all conformal spins. A discussion of the infrared finiteness ...
2003 / Jeppe R. Andersen, Agustı́n Sabio Vera -
Comment on quark masses in SCET
Abstract Quark masses are included in the SCET Lagrangian. Treating the strange quark mass as order Λ QCD, we find that strange quark mass terms are suppressed in SCETI, but are leading order in SCETII. This is relevant for B...
2003 / Adam K. Leibovich, Zoltan Ligeti, Mark B. Wise -
Quadrupole resonances in unstable oxygen isotopes in time-dependent density-matrix formalism
Abstract The strength functions of quadrupole modes in the unstable oxygen isotopes 22O and 24O are calculated using an extended version of the time-dependent Hartree–Fock theory known as the time-dependent density-matrix theory (TDDM). It is found...
2002 / M Tohyama, A.S Umar -
The Pauli form factor of the quark induced by instantons
Abstract The non-perturbative contribution to the Pauli form factor of the quark, F 2(Q 2), is calculated within an instanton model for the QCD vacuum. It is shown that the instantons give a large negative...
2003 / N.I. Kochelev