Showing 2008Show all

203 papers · 1 filter

hep-ex2008★ 25 cited

Search for anomalous top quark couplings with the D0 detector

D0 Collaboration, V. Abazov

Anomalous Wtb couplings modify the angular correlations of the top quark decay products and change the single top quark production cross section. We present limits on anomalous top…

cond-mat.stat-mech2008★ 3 cited

Early time kinetics of systems with spatial symmetry breaking

Rachele Dominguez, Kipton Barros, W. Klein

In this paper we present a study of the early stages of unstable state evolution of systems with spatial symmetry changes. In contrast to the early time linear theory of unstable e…

physics.optics2008★ 6 cited

Time-resolved lasing action from single and coupled photonic crystal nanocavity array lasers emitting in the telecom-band

Dirk Englund, Hatice Altug, Jelena Vuckovic

We measure the lasing dynamics of single and coupled photonic crystal nanocavity array lasers fabricated in the indium gallium arsenide phosphide material system. Under short optic…

cond-mat.mtrl-sci2008★ 73 cited

Adatoms in Graphene

Antonio H. Castro Neto, Valeri N. Kotov, Johan Nilsson +3

We review the problem of adatoms in graphene under two complementary points of view, scattering theory and strong correlations. We show that in both cases impurity atoms on the gra…

q-bio.BM2008★ 87 cited

Probing the Mechanisms of Fibril Formation Using Lattice Models

Mai Suan Li, D. K. Klimov, J. E. Straub +1

Using exhaustive Monte Carlo simulations we study the kinetics and mechanism of fibril formation using lattice models as a function of temperature and the number of chains. While t…

math.SG2008★ 3 cited

The Full Orbifold -theory of Abelian Symplectic Quotients

Rebecca Goldin, Megumi Harada, Tara S. Holm +1

In their 2007 paper, Jarvis, Kaufmann, and Kimura defined the full orbifold -theory of an orbifold , analogous to the Chen-Ruan orbifold cohomology of ${\mathfrak…

quant-ph2008★ 67 cited

Toric-boson model: Toward a topological quantum memory at finite temperature

Alioscia Hamma, Claudio Castelnovo, Claudio Chamon

We discuss the existence of stable topological quantum memory at finite temperature. At stake here is the fundamental question of whether it is, in principle, possible to store qua…

math.RT2008★ 3 cited

Irregular Wakimoto modules and the Casimir connection

Roman M. Fedorov

We study some non-highest weight modules over an affine Kac-Moody algebra at non-critical level. Roughly speaking, these modules are non-commutative localizations of some non-highe…

hep-ph2008★ 25 cited

Collective Quartics and Dangerous Singlets in Little Higgs

Martin Schmaltz, Jesse Thaler

Any extension of the standard model that aims to describe TeV-scale physics without fine-tuning must have a radiatively-stable Higgs potential. In little Higgs theories, radiative…

physics.soc-ph2008★ 16 cited

Dynamics of Strategic Three-Choice Voting

D. Volovik, M. Mobilia, S. Redner

In certain parliamentary democracies, there are two major parties that move in and out of power every few elections, and a third minority party that essentially never governs. We p…

cond-mat.str-el2008★ 19 cited

Impurity-induced frustration in correlated oxides

Cheng-Wei Liu, Shiu Liu, Ying-Jer Kao +2

Using the example of Zn-doped La2CuO4, we demonstrate that a spinless impurity doped into a non-frustrated antiferromagnet can induce substantial frustrating interactions among the…

hep-th2008★ 37 cited

Odderon in Gauge/String Duality

Richard C. Brower, Marko Djurić, Chung-I Tan

At high energies, elastic hadronic cross sections, such as , are dominated by vacuum exchange, which in leading order of the expansion has bee…

physics.flu-dyn2008★ 39 cited

A Universality in Oscillating Flows

K. L. Ekinci, D. M. Karabacak, V. Yakhot

We show that oscillating flow of a simple fluid in both the Newtonian and the non-Newtonian regime can be described by a universal function of a single dimensionless scaling parame…

hep-ph2008★ 30 cited

Phenomenology of SUSY with scalar sequestering

Gilad Perez, Tuhin S. Roy, Martin Schmaltz

The defining feature of scalar sequestering is that the MSSM squark and slepton masses as well as all entries of the scalar Higgs mass matrix vanish at some high scale. This ultrav…

cond-mat.other2008★ 92 cited

Non-adiabacity and large flucutations in a many particle Landau Zener problem

A. Altland, V. Gurarie, T. Kriecherbauer +1

We consider the behavior of an interacting many particle system under slow external driving -- a many body generalization of the Landau-Zener paradigm. We find that a conspiracy of…

math.PR2008★ 11 cited

Moments, cumulants and diagram formulae for non-linear functionals of random measures

Giovanni Peccati, Murad S. Taqqu

This survey provides a unified discussion of multiple integrals, moments, cumulants and diagram formulae associated with functionals of completely random measures. Our approach is…

cond-mat.str-el2008★ 6 cited

Z4-U(1) crossover of the order parameter symmetry in a two-dimensional valence-bond-solid

Jie Lou, Anders W. Sandvik

We discuss ground-state projector simulations of a modified two-dimensional S=1/2 Heisenberg model in the valence bonds basis. Tuning matrix elements corresponding to the diagonal…

cond-mat.mtrl-sci2008★ 41 cited

Magnetic exchange interaction between rare-earth and Mn ions in multiferroic hexagonal manganites

D. Talbayev, A. D. LaForge, S. A. Trugman +4

We report a study of magnetic dynamics in multiferroic hexagonal manganite HoMnO3 by far-infrared spectroscopy. Low-temperature magnetic excitation spectrum of HoMnO3 consists of m…

hep-ex2008★ 84 cited

First Study of Neutron Tagging with a Water Cherenkov Detector

Kamiokande Collaboration, H. Watanabe, H. Zhang

A first study of neutron tagging is conducted in Super--Kamiokande, a 50,000-ton water Cherenkov detector. The tagging efficiencies of thermal neutrons are evaluated in a 0.2 % GdC…

cond-mat.mtrl-sci2008★ 1.3k cited

A tight-binding approach to uniaxial strain in graphene

Vitor M. Pereira, A. H. Castro Neto, N. M. R. Peres

We analyze the effect of tensional strain in the electronic structure of graphene. In the absence of electron-electron interactions, within linear elasticity theory, and a tight-bi…

hep-lat2008★ 1 cited

The removal of critical slowing down

M. A. Clark, J. Brannick, R. C. Brower +4

We present promising initial results of our adaptive multigrid solver developed for application directly to the non-Hermitian Wilson-Dirac system in 4 dimensions, as opposed to the…

q-fin.ST2008★ 10 cited

Effect of changing data size on eigenvalues in the Korean and Japanese stock markets

Cheoljun Eom, Woo-Sung Jung, Taisei Kaizoji +1

In this study, we attempted to determine how eigenvalues change, according to random matrix theory (RMT), in stock market data as the number of stocks comprising the correlation ma…

hep-ex2008★ 14 cited

Evidence for the decay B_s^0 --> D_s^(*)D_s^(*) and a measurement of Delta_Gamma_s^CP/Gamma_s

D0 Collaboration, V. M. Abazov

We search for the semi-inclusive process B_s^0 --> D_s^(*)D_s^(*) using 2.8 fb^-1 of ppbar collisions at s^(1/2) = 1.96 TeV recorded by the D0 detector operating at the Fermilab Te…

hep-ex2008★ 345 cited

An Improved Limit on the Muon Electric Dipole Moment

G. W. Bennett, B. Bousquet, H. N. Brown +73

Three independent searches for an electric dipole moment (EDM) of the positive and negative muons have been performed, using spin precession data from the muon g-2 storage ring at…