Photographs of Comet Barbon, 1966 c, and Comet Rudnicki, 1966 E

Abstract

Several photographs of Comet Barbon, 1966 c, and Comet Rudnicki, 1966 e, were obtained with the 125-cm ( 48-inch ) Palomar Schmidt telescope. Three of them are presented here, all with north at the top, east to the left. * On leave from the Asiago Astrophysical Observatory, t On leave from the Warsaw University Observatory.

Branes and six dimensional fixed points

“…1 There are two ways to generalize this setup. One is to rotate the 5 branes [3,7,12]. This reduces the supersymmetry from N = 4 to N = 2.…”

“…Recently, the world volume of branes was used to study field theories in various dimensions with different amount of supersymmetry [5,2,3,4,7,12,15,17]. The original construction in [5] was invented to study field theories in 2+1 dimensions with N = 4 supersymmetry.…”

THE HAGEDORN TRANSITION, DECONFINEMENT AND THE AdS/CFT CORRESPONDENCE

“…This is due to the nontrivial β-dependence of the metric. The reader can verify this using the exact expression given in [17] for the case at hand. Thus this transition has all the characteristics expected of a deconfinement transition in gauge theories.…”

“…In fact, as R z is reduced (thus raising the gauge theory temperature), before the Hagedorn transition is reached at R z < R t , when R z becomes equal to R t we expect a phase transition to a spacetime where z is the time coordinate. This can be easily seen by comparing the corresponding expressions for the free energy [17]. Let F (R z , R t ) be the expression for the free energy when t is the time coordinate (we do not need the exact expression here).…”

“…Ignoring these problems for the moment one can go ahead and address the issue of the connection between the Hagedorn transition and deconfinememt. 1 Various issues concerning the Hagedorn transition have been discussed in recent papers [16,17].…”