Browsing Physics by Title

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• (American Physical Society, 2011)
This work tabulates measured and derived values of coefficients for Lorentz and $CPT$ violation in the standard-model extension. Summary tables are extracted listing maximal attained sensitivities in the matter, photon, ...
• (American Physical Society, 2012)
We determine the liquid-solid phase diagram for carbon-oxygen and oxygen-selenium plasma mixtures using two-phase molecular dynamics simulations. We identify liquid, solid, and interface regions using a bond angle metric. ...
• (American Physical Society, 1997)
The quantum-Hall effect is necessarily accompanied by low-energy excitations localized at the edge of a two-dimensional electron system. For the case of electrons interacting via the long-range Coulomb interaction, these ...
• (American Physical Society, 2012)
We report a study of the intensity and time dependence of scintillation produced by weak $\alpha$ -particle sources in super fluid helium in the presence of an electric field (0-45 kV/cm) in the temperature range of 0.2 ...
• (American Physical Society, 2012)
The dependence of the confinement transition parameters on the fermion content provides information on the mechanism of confinement. Recent progress in lattice gauge theories has allowed us to study it for a light flavor ...
• (The Chemical Society of Japan, 2012)
The effects of adding an “inversely antagonistic” salt, tetraphenylphosphonium chloride ($\text{PPh}_{4}\text{Cl}$), to a binary mixture of deuterated water and 3-methylpyridine were investigated by visual inspection and ...
• (American Physical Society, 2012)
We study a quantum thermal engine model for which the heat transfer law is determined by Einstein's theory of radiation. The working substance of the quantum engine is assumed to be a two-level quantum system of which the ...
• (American Physical Society, 2012)
We study a thermal engine model for which Newton's cooling law is obeyed during heat transfer processes. The thermal efficiency and its bounds at maximum output power are derived and discussed. This model, though quite ...
• (American Physical Society, 2009)
The behavior of photons in the presence of Lorentz and CPT violation is studied. Allowing for operators of arbitrary mass dimension, we classify all gauge-invariant Lorentz- and CPT-violating terms in the quadratic Lagrange ...
• (American Physical Society, 1995)
We present a theoretical construction for closest-to-classical wave packets localized in both angular and radial coordinates and moving on a keplerian orbit. The method produces a family of elliptical squeezed states for ...
• (American Physical Society, 2012)
We combine searches by the CDF and D0 Collaborations for the associated production of a Higgs boson with a $W$ or $Z$ boson and subsequent decay of the Higgs boson to a bottom-antibottom quark pair. The data, originating ...
• (American Physical Society, 1984)
We show that supersymmetric quantum mechanics may be used to interrelate the spectra of different atoms and ions. This supersymmetry is broken by electron-electron interactions.
• (American Physical Society, 2012)
We present a measurement of the ratio of events with correlated $t$ and $\bar{t}$ spins to the total number of $t\bar{t}$ events. This ratio $f$ is evaluated using a matrix-element-based approach in 729 $t\bar{t}$ candidate ...
• (American Physical Society, 2012)
Measurements of the $D(d, p)T$ $(dd)$ and $T(t, 2n)^{4}\text{He}$ $(tt)$ reaction yields have been compared with those of the $D(t, n)^{4}\text{He}$ $(dt)$ reaction yield, using deuterium-tritium gas-filled inertial ...
• (American Physical Society, 2012)
The two-photon transition $\psi(3686)→\gamma\gamma J/\psi$ is studied in a sample of $1.06×10^8$ $\psi(3686)$ decays collected by the BESIII detector. The branching fraction is measured to be $(3.1±0.6(\text{stat})_{−1.0 ... • (American Physical Society, 1985) We review the proposal that relationships between physical spectra of certain atoms can be considered as evidence for a phenomenological supersymmetry. Next, a comparison is made between the supersymmetric and the hydrogenic ... • (Physics Letters B, 1996) The issue of spontaneous breaking of Lorentz and$\text{CPT}\$ invariance is studied in the open bosonic string using a truncation scheme to saturate the string-field action at successively higher levels. We find strong ...
• (American Physical Society, 2013)
The theoretical description of fermions in the presence of Lorentz and CPT violation is developed. We classify all Lorentz- and CPT-violating and invariant terms in the quadratic Lagrange density for a Dirac fermion, ...
• (American Physical Society, 1988)
We investigate the domain of validity of previously proposed analytical wave functions for atomic quantum-defect theory. This is done by considering the fine-structure splitting of alkali-metal and singly ionized alkaline-earth ...
• (American Physical Society, 2012)
Topological insulators with a time-reversal symmetry-breaking perturbation near the surface present a magnetoelectric response that is quantized when the frequency of the probing fields is much smaller than the surface gap ...