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104 papers · 1 filter
Brane Actions and String Dualities
Eduardo Eyras, Yolanda Lozano
An effective action for the M9-brane is proposed. We study its relation with other branes via dualities. Among these, we find actions for branes which are not suggested by the cent…
Classical versus Quantum Effects in the B=0 Conducting Phase in Two Dimensions
S. V. Kravchenko, D. Simonian, K. Mertes +2
In the dilute two-dimensional electron system in silicon, we show that the temperature below which Shubnikov-de Haas oscillations become apparent is approximately the same as the t…
Pions in isospin asymmetric matter and nuclear Drell-Yan scattering
C. L. Korpa, A. E. L. Dieperink
Using a self-consistent delta-hole model the pion propagation in isospin asymmetric nuclear matter is studied. In neutron-rich matter, corresponding to heavy nuclei, a significant…
The Kaluza-Klein Monopole in a Massive IIA Background
Eduardo Eyras, Yolanda Lozano
We construct the effective action of the KK-monopole in a massive Type IIA background. We follow two approaches. First we construct a massive M-theory KK-monopole from which the II…
A new radio double lens from CLASS: B1127+385
L. V. E. Koopmans, A. G. de Bruyn, D. R. Marlow +9
We present the discovery of a new gravitational lens system with two compact radio images separated by 0.701+-0.001 arcsec. The lens system was discovered in the Cosmic Lens All Sk…
Kinematically Lopsided Spiral Galaxies
R. A. Swaters, R. H. M. Schoenmakers, R. Sancisi +1
Asymmetries in the distribution of light and neutral hydrogen are often observed in spiral galaxies. Here, attention is drawn to the presence of large-scale asymmetries in their ki…