33,400 research outputs found
Magnetized color superconducting cold quark matter within the SU(2) NJL model: a novel regularization scheme
The influence of intense magnetic fields on the behavior of color
superconducting cold quark matter is investigated using an SU(2) NJL-type
model for which a novel regulation scheme is introduced. In such a scheme the
contributions which are explicitly dependent on the magnetic field turn out to
be finite and, thus, do not require to be regularized. As a result of this,
nonphysical oscillations that might arise in the alternative regularization
schemes previously used in the literature are naturally removed. The
sensitivity of our results to the model parametrization is analyzed.Comment: 28 pages, 7 figure
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Genome Sequences of Three Lactobacillus Species Strains of the Stomach of the White-Footed Deermouse (Peromyscus leucopus).
Three colony types of Lactobacillus were isolated from the stomach of LL colony stock Peromyscus leucopus deermice, a reservoir for several human zoonoses. Genome sequences revealed two isolates to be new strains of Lactobacillus animalis and Lactobacillus reuteri The third was distinct from known species and was provisionally designated Lactobacillus sp. strain LL6
The signature of a splice
We study the behavior of the signature of colored links [Flo05, CF08] under
the splice operation. We extend the construction to colored links in integral
homology spheres and show that the signature is almost additive, with a
correction term independent of the links. We interpret this correction term as
the signature of a generalized Hopf link and give a simple closed formula to
compute it.Comment: Updated version. Sign corrected in Theorems 2.2 and 2.10 of the
previous version. Also Corollary 2.6 was corrected and an Example added. 24
pages, 5 figures. To appear in IMR
Slopes and signatures of links
We define the slope of a colored link in an integral homology sphere,
associated to admissible characters on the link group. Away from a certain
singular locus, the slope is a rational function which can be regarded as a
multivariate generalization of the Kojima--Yamasaki -function. It is the
ratio of two Conway potentials, provided that the latter makes sense;
otherwise, it is a new invariant. The slope is responsible for an extra
correction term in the signature formula for the splice of two links, in the
previously open exceptional case where both characters are admissible. Using a
similar construction for a special class of tangles, we formulate generalized
skein relations for the signature
The hidden geometry of ocean flows
We introduce a new global Lagrangian descriptor that is applied to flows with
general time dependence (altimetric datasets). It succeeds in detecting
simultaneously, with great accuracy, invariant manifolds, hyperbolic and
non-hyperbolic flow regions.Comment: 4 pages, 4 figure
On hyperbolic knots in S^3 with exceptional surgeries at maximal distance
Baker showed that 10 of the 12 classes of Berge knots are obtained by surgery
on the minimally twisted 5-chain link. In this article we enumerate all
hyperbolic knots in S^3 obtained by surgery on the minimally twisted 5 chain
link that realize the maximal known distances between slopes corresponding to
exceptional (lens, lens), (lens, toroidal), (lens, Seifert fibred spaces)
pairs. In light of Baker's work, the classification in this paper conjecturally
accounts for 'most' hyperbolic knots in S^3 realizing the maximal distance
between these exceptional pairs. All examples obtained in our classification
are realized by filling the magic manifold. The classification highlights
additional examples not mentioned in Martelli and Petronio's survey of the
exceptional fillings on the magic manifold. Of particular interest, is an
example of a knot with two lens space surgeries that is not obtained by filling
the Berge manifold.Comment: 30 pages, 5 figures. This revised version has some improvements in
the exposition. The main theorems remain as in the last versio
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