20,202 research outputs found
Gluino zero-modes for non-trivial holonomy calorons
We couple fermion fields in the adjoint representation (gluinos) to the SU(2)
gauge field of unit charge calorons defined on R^3 x S_1. We compute
corresponding zero-modes of the Dirac equation. These are relevant in
semiclassical studies of N=1 Super-symmetric Yang-Mills theory. Our formulas,
show that, up to a term proportional to the vector potential, the modes can be
constructed by different linear combinations of two contributions adding up to
the total caloron field strength.Comment: 17 pages, 3 Postscript figures, late
Dark Matter Seeding in Neutron Stars
We present a mechanism that may seed compact stellar objects with stable
lumps of quark matter, or {\it strangelets}, through the self-annihilation of
gravitationally accreted WIMPs. We show that dark matter particles with masses
above a few GeV may provide enough energy in the nuclear medium for quark
deconfinement and subsequent strangelet formation. If this happens this effect
may then trigger a partial or full conversion of the star into a strange star.
We set a new limit on the WIMP mass in the few-GeV range that seems to be
consistent with recent indications in dark matter direct detection experiments.Comment: 3 pages, 1 figure. Prepared for 19th Particles and Nuclei
International Conference (PANIC 2011), Boston, USA 25-29 Jul 201
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