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138 papers · 1 filter
The Opacity of the Lyman Alpha Forest and Implications for Omega_{baryon} and the Ionizing Background
M. Rauch, J. Miralda-Escude, W. L. W. Sargent +6
We have measured the distribution function of the flux decrement caused by Lyman alpha forest absorption in a new sample of high resolution QSO spectra. The observations are compar…
Phonon Scattering of Composite Fermions
D. V. Khveshchenko, M. Reizer
We study the principal aspects of the interaction between acoustic phonons and two-dimensional electrons in quantizing magnetic fields corresponding to even denominator fractions.…
A survey for large image-separation lensed quasars
Dan Maoz, Hans-Walter Rix, Avishay Gal-Yam +1
The statistics of gravitationally lensed quasars with multiple images in the 0.1''-7'' range have been measured in various surveys. Little is known, however, about lensed-quasar st…
The Lamb Shift in a Light Front Hamiltonian Approach
Billy D. Jones, Robert J. Perry
Light-front Hamiltonian methods are being developed to attack bound-state problems in QCD. In this paper we advance the state of the art for these methods by computing the well-kno…
Signatures of Accretion Disks in Quasar Microlensing
Andrew Gould, Jordi Miralda-Escude
We propose that relative variability on short time-scales of the multiple images of a lensed quasar, after removal of the time delay, may be caused by hot spots or other moving str…
(1+1)-Dimensional Yang-Mills Theory Coupled to Adjoint Fermions on the Light Front
S. Pinsky
We consider SU(2) Yang-Mills theory in 1+1 dimensions coupled to massless adjoint fermions. With all fields in the adjoint representation the gauge group is actually SU(2)/Z_2, whi…