164,109 research outputs found
Fermionic entanglement ambiguity in non-inertial frames
We analyse an ambiguity in previous works on entanglement of fermionic fields
in non-inertial frames. This ambiguity, related to the anticommutation
properties of field operators, leads to non-unique results when computing
entanglement measures for the same state. We show that the ambiguity disappears
when we introduce detectors, which are in any case necessary as a means to
probe the field entanglement.Comment: 9 pages, 4 figures. Revtex 4.1, added Journal referenc
Unified life detection system: A concept
Systematic investigation of techniques and hardware which could be utilized in life detection system has resulted in identification of group of candidate concepts and selection of "unified system". Theme of concept permits greatest flexibility in procedural details for experiments which can be performed in individual ampules
Complete Reducibility and Commuting Subgroups
Let G be a reductive linear algebraic group over an algebraically closed
field of characteristic p. We study J.-P. Serre's notion of G-complete
reducibility for subgroups of G. In particular, for a subgroup H and a normal
subgroup N of H, we look at the relationship between G-complete reducibility of
N and of H, and show that these properties are equivalent if H/N is linearly
reductive, generalizing a result of Serre. We also study the case when H = MN
with M a G-completely reducible subgroup of G which normalizes N. We show that
if G is connected, N and M are connected commuting G-completely reducible
subgroups of G, and p is good for G, then H = MN is also G-completely
reducible.Comment: 21 pages; to appear in J. Reine Angew. Math. final for
Voyager Mars planetary quarantine Basic math model report
Basic math model study of planetary quarantine effects on Voyager Mars missio
Exact and Fast Numerical Algorithms for the Stochastic Wave Equation
On the basis of integral representations we propose fast numerical methods to solve the Cauchy problem for the stochastic wave equation without boundaries and with the Dirichlet boundary conditions. The algorithms are exact in a probabilistic sense
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