11,439 research outputs found
Weak braided monoidal categories and their homotopy colimits
We show that the homotopy colimit construction for diagrams of categories
with an operad action, recently introduced by Fiedorowicz, Stelzer and Vogt,
has the desired homotopy type for diagrams of weak braided monoidal categories.
This provides a more flexible way to realize E-2 spaces categorically.Comment: 7 page
[Review of] Milton Murayama. All I Asking For Is My Body
In little over a decade this short novel has become a classic, developing a dedicated following, not only in Asian American communities and literature programs, but also in traditional literature programs alongside books such as Huckleberry Finn where the strategies are the same: the view of the world through the clear eye of youth, the puncturing of both pretense and pretension by the view from the bottom up
Braided injections and double loop spaces
We consider a framework for representing double loop spaces (and more
generally E-2 spaces) as commutative monoids. There are analogous commutative
rectifications of braided monoidal structures and we use this framework to
define iterated double deloopings. We also consider commutative rectifications
of E-infinity spaces and symmetric monoidal categories and we relate this to
the category of symmetric spectra.Comment: 34 pages, 4 figures, minor correction
The action of long strings in supersymmetric field theories
Long strings emerge in many Quantum Field Theories, for example as vortices
in Abelian Higgs theories, or flux tubes in Yang-Mills theories. The actions of
such objects can be expanded in the number of derivatives, around a long
straight string solution. This corresponds to the expansion of energy levels in
powers of 1/L, with L the length of the string. Doing so reveals that the first
few terms in the expansions are universal, and only from a certain term do they
become dependent on the originating field theory. Such classifications have
been made before for bosonic strings. In this work we expand upon that and
classify also strings with fermionic degrees of freedom, where the string
breaks D=4 N=1 SUSY completely. An example is the confining string in N=1 SYM
theory. We find a general method for generating supersymmetric action terms
from their bosonic counterparts, as well as new fermionic terms which do not
exist in the non-supersymmetric case. These terms lead to energy corrections at
a lower order in 1/L than in the bosonic case
Radial growth of harmonic functions in the unit ball
We study harmonic functions which admit a certain majorant in the unit ball
in . We prove that when the majorant fulfills a doubling condition, the
extremal growth or decay may occur only along small sets of radii, and we give
precise estimates of these exceptional sets
Terminal synchrones in the tail of comet 1965f
Position and velocity measurements of six synchrone emissions in tail of comet Ikeya-Sek
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