Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR2.9k papers
- University of MichiganUS2k papers
- Institute for High Energy PhysicsES1.9k papers
- University College LondonGB1.9k papers
- University of ManchesterGB1.9k papers
- University of BonnDE1.9k papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR1.8k papers
- Brookhaven National LaboratoryUS1.8k papers
- University of ArizonaUS1.8k papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR1.8k papers
- Max Planck Institute for PhysicsDE1.8k papers
- Aix-Marseille UniversitéFR1.8k papers
144 papers · 1 filter
Optimal conversion of non--local unitary operations
W. Dür, G. Vidal, J. I. Cirac
We study when a non--local unitary operation acting on two --level systems can probabilistically simulate another one when arbitrary local operations and classical communication…
Monopoles in Space-Time Noncommutative Born-Infeld theory
Paolo Aschieri
We transform static solutions of space-noncommutative Dirac-Born-Infeld theory (DBI) into static solutions of space-time noncommutative DBI. Via Seiberg-Witten map we match this sy…
Measuring the Speed of Sound of Quintessence
Joel K. Erickson, R. R. Caldwell, Paul J. Steinhardt +2
Quintessence, a time-varying energy component that may account for the accelerated expansion of the universe, can be characterized by its equation of state and sound speed. In this…
Search for Leptoquarks in Electron-Photon Scattering at sqrt(s_ee) up to 209 GeV at LEP
The OPAL collaboration, G. Abbiendi
Searches for first generation scalar and vector leptoquarks, and for squarks in R-parity violating SUSY models with the direct decay of the squark into Standard Model particles, ha…
Isospin effects in Nuclear Fragmentation
V. Baran, M. Colonna, M. Di Toro +3
We investigate properties of the symmetry term in the equation-of-state (EOS) of nuclear matter (NM) from the analysis of simulations of fragmentation events in intermediate energy…
Shifting the quantum Hall plateau level in a double layer electron system
E. V. Deviatov, A. A. Shashkin, V. T. Dolgopolov +4
We study the plateaux of the integer quantum Hall resistance in a bilayer electron system in tilted magnetic fields. In a narrow range of tilt angles and at certain magnetic fields…
Seven Steps Towards the Classical World
Valia Allori, Detlef Dürr, Shelly Goldstein +1
Classical physics is about real objects, like apples falling from trees, whose motion is governed by Newtonian laws. In standard Quantum Mechanics only the wave function or the res…
Entanglement cost of mixed states
G. Vidal, W. Dür, J. I. Cirac
We compute the entanglement cost of several families of bipartite mixed states, including arbitrary mixtures of two Bell states. This is achieved by developing a technique that all…
Enhanced Binding in non-relativistic QED
Christian Hainzl, Vitali Vougalter, Semjon A. Vugalter
We consider a spinless particle coupled to a photon field and prove that even if the Schrödinger operator does not have eigenvalues the system can have a ground state. We…
A Locally Trivial Quantum Hopf Fibration
P. M. Hajac, R. Matthes, W. Szymanski
The irreducible *-representations of the polynomial algebra O(S^3_{pq}) of the quantum 3-sphere introduced by Calow and Matthes are classified. The K-groups of its universal C*-alg…
Conformal Field Theory Interpretation of Black Hole Quasi-normal Modes
Danny Birmingham, Ivo Sachs, Sergey N. Solodukhin
We obtain exact expressions for the quasi-normal modes of various spin for the BTZ black hole. These modes determine the relaxation time of black hole perturbations. Exact agreemen…
The Cosmological Evolution of the Nucleon Mass and the Electroweak Coupling Constants
Xavier Calmet, Harald Fritzsch
Starting from astrophysical indications that the fine structure constant might undergo a small cosmological time shift, we discuss the implications of such an effect from the point…
Single-spin azimuthal asymmetry in exclusive electroproduction of pi^+ mesons
HERMES Collaboration, A. Airapetian
A single-spin asymmetry in the distribution of exclusively produced pi^+ mesons azimuthally around the virtual photon direction relative to the lepton scattering plane has been mea…
Intensity-intensity correlations as a probe of interferences - under conditions of none in the intensity
G. S. Agarwal, J. von Zanthier, C. Skornia +1
The different behaviour of first order interferences and second order correlations are investigated for the case of two coherently excited atoms. For intensity measurements this pr…
Why extra gauge Bosons should exist and how to hunt them
A. Leike
Werner Heisenberg's work is the foundation for many topics of present research. This is also true for the search for extra gauge bosons. The prospects of future colliders in this s…
On the Discrete Spectrum of a Pseudo-Relativistic Two-Body Pair Operator
Semjon Vugalter, Timo Weidl
We prove Cwikel-Lieb-Rosenbljum and Lieb-Thirring type bounds on the discrete spectrum of a two-body pair operator and calculate spectral asymptotics for the eigenvalue moments and…
On the dynamics of color magnetic monopoles in full QCD
V. Bornyakov, H. Ichie, S. Kitahara +8
We present first results on the dynamics of monopoles in full QCD with N_f=2 flavors of dynamical quarks. Among the quantities being studied are the monopole density and the monopo…
Effective Theories of Confinement
L. Dittmann, T. Heinzl, A. Wipf
We review some approaches to describe confinement in terms of effective (model) field theories. After a brief discussion of the dual Abelian Higgs model, we concentrate on a lattic…
Search for Doubly Charged Higgs Bosons with the OPAL detector at LEP
The OPAL collaboration, G. Abbiendi
A search for pair-produced doubly charged Higgs bosons has been performed using data samples corresponding to an integrated luminosity of about 614 pb-1 collected with the OPAL det…
A security proof of quantum cryptography based entirely on entanglement purification
Hans Aschauer, Hans J. Briegel
We give a proof that entanglement purification, even with noisy apparatus, is sufficient to disentangle an eavesdropper (Eve) from the communication channel. In the security regime…
Godbillon-Vey invariants for families of foliations
D. Kotschick
The classical Godbillon-Vey invariant is an odd degree cohomology class that is a cobordism invariant of a single foliation. Here we investigate cohomology classes of even degree t…
Superfield Noether Procedure
M. Magro, I. Sachs, S. Wolf
We develop a superspace Noether procedure for supersymmetric field theories in 4-dimensions for which an off-shell formulation in ordinary superspace exists. In this way we obtain…
The Physics of Flavor is the Flavor of Physics
H. Fritzsch
Summary Talk: International Conference of Flavor Physics (ICFP 2001). Zhang-Jia-Jie. Hunan, China (May / June 2001)
Non-Abelian gauge theory on noncommutative spaces
Peter Schupp
We present a brief introduction to the construction of gauge theories on noncommutative spaces with star products. Particular emphasis is given to issues related to non-Abelian gau…