Pair plasma cushions in the hole-boring scenario

Hole Pair in an Antiferromagnet

(Received) Exact diagonalizations of two dimensional small t–J clusters reveal dominant hole-hole correlations at distance √ 2 (ie between holes on next nearest neighbor sites). A new form of singlet d x 2 −y 2 pair operator is proposed to account for the spatial extention of the two hole-bound pair beyond nearest neighbor sites.

Study of Laser-Hole Boring into Overdense Plasmas.

Entropy in black hole pair production.

Pair production of Reissner-Nordstrøm black holes in a magnetic field can be described by a euclidean instanton. It is shown that the instanton amplitude contains an explicit factor of e, where A is the area of the event horizon. This is consistent with the hypothesis that e measures the number of black hole states. † Email addresses: [email protected], [email protected].

The Mesoproterozoic – no “boring billion”

The authors show that the Mesoproterozoic (1.6-1.0 bn year before present) was no “boring billion” but a “bustling billion” - not only with Stromatolites and their apex in the Calymmian and Ectasian but also with the presence of multicellular organisms. To make it visible a graphical reconstruction was created. For a long time, it was assumed that there existed no noteworthy biosphere on Earth ...

Wormholes and Black Hole Pair Creation

We analyze the possibility of black holes pair creation induced by three dimensional wormholes. Although this spacetime configuration is nowadays hard to suppose, it can be very important in the early universe, when the wormhole spacetime foam representation can be meaningful. We compare our approach with the no-boundary prescription of Hartle-Hawking. PACS numbers: 04.60, 04.70.Dy, 98.80Hw Typ...