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Now showing items 1-10 of 222

#### Mass, entropy, and holography in asymptotically de Sitter spaces

(American Physical Society, 2002-06-15)

We propose a novel prescription for computing the boundary stress tensor and charges of asymptotically de Sitter (dS) spacetimes from data at early or late time infinity. If there is a holographic dual to dS spaces, defined ...

#### Intervalenceband and plasmon optical absorption in heavily doped GaAs:C

(American Institute of Physics, 2002-01-01)

By using direct numerical-solution techniques for the reflectance (R) and transmittance (T) equations of a multilayer structure, we have analyzed infrared R and T measurements on heavily doped p-type GaAs:C films grown by ...

#### Chaotic advection, diffusion, and reactions in open flows

(AIP Publishing, 2000-03)

We review and generalize recent results on advection of particles in open time-periodic hydrodynamical flows. First, the problem of passive advection is considered, and its fractal and chaotic nature is pointed out. Next, ...

#### A discrete-velocity, stationary Wigner equation

(AIP Publishing, 2000-11)

This paper is concerned with the one-dimensional stationary linear Wigner equation, a kinetic formulation of quantum mechanics. Specifically, we analyze the well-posedness of the boundary value problem on a slab of the ...

#### Notes on spacetime thermodynamics and the observer dependence of entropy

(American Physical Society, 2004-03)

Because of the Unruh effect, accelerated and inertial observers differ in their description of a given quantum state. The implications of this effect are explored for the entropy assigned by such observers to localized ...

#### Relating the cosmological constant and supersymmetry breaking in warped compactifications of IIB string theory

(American Physical Society, 2003-02-15)

It has been suggested that the observed value of the cosmological constant is related to the supersymmetry breaking scale M-susy through the formula Lambdasimilar toM(p)(4)(M-susy/M-p)(8). We point out that a similar ...

#### Bound states of hydrogen atom in a theory with minimal length uncertainty relations

(AIP Publishing, 2007-05)

The following properties of bound states of hydrogen atom in a theory with noncommuting position operators are investigated: their number, multiplicities, accidental degeneracy, localization, and dependence on the values ...

#### Mass Outflow in the Seyfert 1 Galaxy NGC 5548

(IOP PUBLISHING LTD, 2009-06)

We present a study of the intrinsic UV absorption and emission lines in an historically low-state spectrum of the Seyfert 1 galaxy NGC 5548, which we obtained in 2004 February at high spatial and spectral resolution with ...

#### First-principles study of a single-molecule magnet Mn-12 monolayer on the Au(111) surface

(American Physical Society, 2007-12)

The electronic structure of a monolayer of single-molecule magnets Mn-12 on a Au(111) surface is studied using spin-polarized density-functional theory. The Mn-12 molecules are oriented such that the magnetic easy axis is ...

#### Superuniversality in phase-ordering disordered ferromagnets

(American Physical Society, 2008-12)

The phase-ordering kinetics of the ferromagnetic two-dimensional Ising model with uniform bond disorder is investigated by intensive Monte Carlo simulations. Simple aging behavior is observed in the single-time correlator ...