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48 papers · 1 filter
The Schwinger Model with Perfect Staggered Fermions
W. Bietenholz, H. Dilger
We construct and test a quasi-perfect lattice action for staggered fermions. The construction starts from free fermions, where we suggest a new blocking scheme, which leads to exce…
Elliptic Flow and HBT in non-central Nuclear Collisions
H. Heiselberg, A. Levy
Elliptic flow and HBT are studied for non-central relativistic nuclear collisions. Azimuthal asymmetries show up in both elliptic flow and HBT radii and are calculated in both coll…
The optical/IR counterpart of the 3 July 1998 gamma-ray burst and its evolution
A. J. Castro-Tirado, M. R. Zapatero-Osorio, J. Gorosabel +21
We imaged the X-ray error box of GRB 980703, beginning 22.5 hours after the gamma--ray event, in both the optical R and near-infrared H bands. A fading optical/IR object was detect…
The rapid evolution of the born-again giant Sakurai's object
M. Asplund, D. L. Lambert, T. Kipper +2
The extraordinarily rapid evolution of the born-again giant Sakurai's object can be traced both in a continued cooling of the stellar surface and dramatic changes in chemical compo…
The Phase Diagram of Three-Dimensional SU(3) + Adjoint Higgs Theory
K. Kajantie, M. Laine, A. Rajantie +2
We study the phase diagram of the three-dimensional SU(3)+adjoint Higgs theory with lattice Monte Carlo simulations. A critical line consisting of a first order line, a tricritical…
Higgs sector CP-violation at the electroweak phase transition
M. Laine, K. Rummukainen
We consider explicit and spontaneous CP-violation related to the profile of the two Higgs doublets at the MSSM electroweak phase transition. We find, in accordance with previous re…