Spin Dependence of D0-brane Interactions

Kavli Affiliate: Jeffrey Harvey | First 5 Authors: Jeffrey A. Harvey, , , , | Summary: The long-range, spin-dependent forces between D0-branes are related to long-range fundamental string interactions using duality. These interactions can then be computed by taking the long distance non-relativistic expansion of string four-point amplitudes. The results are in accord with the […]


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Weak Lensing and the Measurement of q0 from Type Ia Supernovae

Kavli Affiliate: Joshua Frieman | First 5 Authors: Joshua A. Frieman, , , , | Summary: On-going projects to discover Type Ia supernovae at redshifts z = 0.3 – 1, coupled with improved techniques to narrow the dispersion in SN Ia peak magnitudes, have renewed the prospects for determining the cosmic deceleration parameter q_0. We […]


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Luminosity Functions from Photometric Redshifts I: Techniques

Kavli Affiliate: Mark SubbaRao | First 5 Authors: M. U. SubbaRao, A. J. Connolly, A. S. Szalay, D. C. Koo, | Summary: The determination of the galaxy luminosity function is an active and fundamental field in observational cosmology. In this paper we propose a cost effective way of measuring galaxy luminosity functions at faint magnitudes. […]


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Loop Corrections in Non-Linear Cosmological Perturbation Theory

Kavli Affiliate: Joshua Frieman | First 5 Authors: Roman Scoccimarro, Joshua Frieman, , , | Summary: Using a diagrammatic approach to Eulerian perturbation theory, we analytically calculate the variance and skewness of the density and velocity divergence induced by gravitational evolution from Gaussian initial conditions, including corrections *beyond* leading order. Except for the power spectrum, […]


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Generation of Density Perturbations by Primordial Magnetic Fields

Kavli Affiliate: Robert Rosner | First 5 Authors: Eun-jin Kim, Angela Olinto, Robert Rosner, , | Summary: We study the generation and evolution of density perturbations and peculiar velocities due to primordial magnetic fields. We assume that a random magnetic field was present before recombination and follow the field’s effect on the baryon fluid starting […]


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Phi^4 Kinks: Statistical Mechanics

Kavli Affiliate: Salman Habib | First 5 Authors: Salman Habib, , , , | Summary: Some recent investigations of the thermal equilibrium properties of kinks in a $1+1$-dimensional, classical $Φ^4$ field theory are reviewed. The distribution function, kink density, correlation function, and certain thermodynamic quantities were studied both theoretically and via large scale simulations. A […]


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Quantum Diffusion

Kavli Affiliate: Salman Habib | First 5 Authors: Salman Habib, , , , | Summary: We consider a simple quantum system subjected to a classical random force. Under certain conditions it is shown that the noise-averaged Wigner function of the system follows an integro-differential stochastic Liouville equation. In the simple case of polynomial noise-couplings this […]


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