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48 papers · 1 filter
Field theory simulation of Abelian-Higgs cosmic string cusps
Ken D. Olum, J. J. Blanco-Pillado
We have performed a lattice field theory simulation of cusps in Abelian-Higgs cosmic strings. The results are in accord with the theory that the portion of the strings which overla…
Measurement of the form-factor ratios for D_s^+ -> phi ell^+ nu_ell
Fermilab E791 Collaboration, E. M. Aitala, S. Amato
We have measured the form factor ratios r_V = V(0)/A_1(0) and r_2 = A_2(0)/A_1(0) for the decay D_s^+ -> phi ell^+ nu_ell, phi -> K^+ K^-, using data from charm hadroproduction exp…
UV Signposts of Resonant Dynamics in Disk Galaxies
William H. Waller, Christine Winslow, Michael Fanelli +1
Imaging in the restframe ultraviolet has proven to be an effective and vital means of tracing dynamical patterns of star formation in galaxies out to high redshifts. Using images f…
The quantum cosmology debate
Alexander Vilenkin
I review the tunneling, Hartle-Hawking and Linde proposals for the wave function of the universe and comment on the recent work on quantum creation of open universes.
Fully Anisotropic String Cosmologies, Maxwell Fields and Primordial Shear
Massimo Giovannini
We present a class of exact cosmological solutions of the low energy string effective action in the presence of a homogeneous magnetic fields. We discuss the physical properties of…
Measurement of the Ds Lifetime
Fermilab E791 Collaboration, E. M. Aitala
We report the results of a precise measurement of the Ds meson lifetime based on 1662 +/- 56 fully reconstructed Ds -> phi pi decays, from the charm hadroproduction experiment E791…