Browsing Physics by Title

Sort by: Order: Results:

  • Bazavov, A.; Bernard, C.; Bouchard, C.M.; DeTar, C.; Di Pierro, M.; El-Khadra, A.X.; Evans, R.T.; Freeland, E.D.; Gámiz, E.; Gottlieb, S.; ... (American Physical Society, 2012)
    We study $SU(3)$-breaking effects in the neutral $B_{d}-\overline{B}_{d}$ and $B_{s}-\overline{B}_{s}$ systems with unquenched $N_{f}=2+1$ lattice quantum chromodynamics (QCD). We calculate the relevant matrix elements on ...
  • Kostelecký, V.A.; Samuel, S. (American Physical Society, 1995)
    Around one second after the big bang, neutrino decoupling and $e^{+-}e^-$ annihilation distorted the Fermi-Dirac spectrum of neutrino energies. Assuming neutrinos have masses and can mix, we compute the distortions using ...
  • Kostelecký, V.A.; Mewes, M. (American Physical Society, 2012)
    The behavior of fermions in the presence of Lorentz and CPT violation is studied. Allowing for operatorsof any mass dimension, we classify all Lorentz-violating terms in the quadratic Lagrange density for free fermions. ...
  • Carroll, S.M.; Harvey, J.A.; Kostelecký, V.A.; Lane, C.D.; Okamoto, T. (American Physical Society, 2001)
    The role of Lorentz symmetry in noncommutative field theory is considered. Any realistic noncommutative theory is found to be physically equivalent to a subset of a general Lorentz-violating standard-model extension involving ...
  • Kostelecký, V.A.; Samuel, S. (American Physical Society, 1994)
    We derive the equations that govern neutrino and antineutrino behavior in the early Universe. Results are presented from numerical simulations incorporating nonlinear effects of the neutrino-antineutrino background as well ...
  • Kostelecký, V.A.; Samuel, S. (American Physical Society, 1990)
    We use covariant string field theory to explore many-body string physics. A candidate nonperturbative vacuum is identified via a level-truncation scheme. The breaking of internal and Lorentz symmetries is investigated. We ...
  • Kostelecký, V.A.; Lane, C.D. (AIP Publishing, 1999)
    A method is presented for deriving the nonrelativistic quantum Hamiltonian of a free massive fermion from the relativistic Lagrangian of the Lorentz-violating standard-model extension. It permits the extraction of terms ...
  • Poplawski, N. (American Physical Society, 2012)
    The Einstein-Cartan-Sciama-Kibble theory of gravity removes the constraint of general relativity that the affine connection be symmetric by regarding its antisymmetric part, the torsion tensor, as a dynamical variable. The ...
  • Abazov, V.M.; Abbott, B.; Acharya, B.S.; Adams, M.; Adams, T.; Alexeev, G.D; Alkhazov, G.; Alton, A.; Alverson, G.; Aoki, M.; ... (American Physical Society, 2012)
    Using data corresponding to an integrated luminosity of 1.3fb -1, we observe a narrow mass state decaying into Υ(1S)+γ, where the Υ(1S) meson is detected by its decay into a pair of oppositely charged muons, and the photon ...
  • Kostelecký, V.A.; Perry, M.J.; Potting, R. (American Physical Society, 2000)
    The off-shell structure of the string sigma model is investigated. In the open bosonic string, nonperturbative effects appear to depend crucially on the regularization scheme. A scheme retaining the notion of string width ...
  • Kostelecký, V.A.; Lane, C.D.; Pickering, A.G.M. (American Physical Society, 2002)
    We show that the general Lorentz- and CPT-violating extension of quantum electrodynamics is one-loop renormalizable. The one-loop Lorentz-violating beta functions are obtained, and the running of the coefficients for Lorentz ...
  • Díaz, J.S.; Kostelecký, V.A.; Mewes, M. (American Physical Society, 2009)
    The effects of perturbative Lorentz and $CPT$ violation on neutrino oscillations are studied. Features include neutrino-antineutrino oscillations, direction dependence, and unconventional energy behavior. Leading-order ...
  • Kostelecký, V.A.; Samuel, S. (American Physical Society, 1989)
    We investigate measurable gravitational and cosmological effects in four dimensions that can arise from the compactification of higher-dimensional theories incorporating gravity. We identify the nature of effects due to ...
  • Kostelecký, V.A.; Samuel, S. (American Physical Society, 1991)
    We show that string theories allow interactions potentially leading to photon and graviton-mass terms when one or more scalar fields acquire vacuum expectation values. A general analysis is presented for the case when one ...
  • De Juan, F.; Fertig, H.A. (American Physical Society, 2012)
    Phonon dispersions generically display nonanalytic points, known as Kohn anomalies, due to electron-phonon interactions. We analyze this phenomenon for a zone-boundary phonon in undoped graphene. When electron-electron ...
  • Bluhm, R.; Kostelecký, V.A.; Lane, C.D.; Russell, N. (American Physical Society, 2003)
    Space-based experiments offer sensitivity to numerous unmeasured effects involving Lorentz and $CPT$ violation. We provide a classification of clock sensitivities and present explicit expressions for time variations arising ...
  • Kostelecký, V.A.; Tasson, J.D. (American Physical Society, 2009)
    Deviations from relativity are tightly constrained by numerous experiments. A class of unmeasured and potentially large violations is presented that can be tested in the laboratory only via weak-gravity couplings. Specialized ...
  • Bluhm, R.; Kostelecký, V.A. (American Physical Society, 1994)
    We show that a theoretical description of radial Rydberg wave packets in alkali-metal atoms based solely on hydrogenic wave functions and energies is insufficient to explain data that could be obtained in pump-probe ...
  • Murthy, G.; Shimshoni, E.; Shankar, R.; Fertig, H.A. (American Physical Society, 2012)
    We study a generic two-dimensional hopping model on a honeycomb lattice with strong spin-orbit coupling, $\textit{without the requirement that the half-filled lattice be a topological insulator}$. For quarter-(or three-quarter) ...
  • Bluhm, R.; Kostelecký, V.A. (American Physical Society, 1993)
    We outline an analytical framework for the treatment of radial Rydberg wave packets produced by short laser pulses in the absence of external electric and magnetic fields. Wave packets of this type are localized in the ...

Search IUScholarWorks


Advanced Search

Browse

My Account