68 research outputs found
4D, N = 1 Supersymmetry Genomics (I)
Presented in this paper the nature of the supersymmetrical representation
theory behind 4D, N = 1 theories, as described by component fields, is
investigated using the tools of Adinkras and Garden Algebras. A survey of
familiar matter multiplets using these techniques reveals they are described by
two fundamental valise Adinkras that are given the names of the cis-Valise
(c-V) and the trans-Valise (t-V). A conjecture is made that all off-shell 4D, N
= 1 component descriptions of supermultiplets are associated with two integers
- the numbers of c-V and t-V Adinkras that occur in the representation.Comment: 53 pages, 19 figures, Report-II of SSTPRS 2008 Added another chapter
for clarificatio
Diagonalization of the neutralino mass matrix and boson-neutralino interaction
We analyze a connection between neutralino mass sign, parity and structure of
the neutralino-boson interaction. Correct calculation of spin-dependent and
spin-independent contributions to neutralino-nuclear scattering should consider
this connection. A convenient diagonalization procedure, based on the
exponetial parametrization of unitary matrix, is suggested.Comment: 21 pages, RevTex
Space Telescope and Optical Reverberation Mapping Project. VII. Understanding the Ultraviolet Anomaly in NGC 5548 with X-Ray Spectroscopy
During the Space Telescope and Optical Reverberation Mapping Project observations of NGC 5548, the continuum and emission-line variability became decorrelated during the second half of the six-month-long observing campaign. Here we present Swift and Chandra X-ray spectra of NGC 5548 obtained as part of the campaign. The Swift spectra show that excess flux (relative to a power-law continuum) in the soft X-ray band appears before the start of the anomalous emission-line behavior, peaks during the period of the anomaly, and then declines. This is a model-independent result suggesting that the soft excess is related to the anomaly. We divide the Swift data into on- and off-anomaly spectra to characterize the soft excess via spectral fitting. The cause of the spectral differences is likely due to a change in the intrinsic spectrum rather than to variable obscuration or partial covering. The Chandra spectra have lower signal-to-noise ratios, but are consistent with the Swift data. Our preferred model of the soft excess is emission from an optically thick, warm Comptonizing corona, the effective optical depth of which increases during the anomaly. This model simultaneously explains all three observations: the UV emission-line flux decrease, the soft-excess increase, and the emission-line anomaly
The Marine Microbial Eukaryote Transcriptome Sequencing Project (MMETSP): Illuminating the Functional Diversity of Eukaryotic Life in the Oceans through Transcriptome Sequencing
Microbial ecology is plagued by problems of an abstract nature. Cell sizes are so small and population sizes so large that both are virtually incomprehensible. Niches are so far from our everyday experience as to make their very definition elusive. Organisms that may be abundant and critical to our survival are little understood, seldom described and/or cultured, and sometimes yet to be even seen. One way to confront these problems is to use data of an even more abstract nature: molecular sequence data. Massive environmental nucleic acid sequencing, such as metagenomics or metatranscriptomics, promises functional analysis of microbial communities as a whole, without prior knowledge of which organisms are in the environment or exactly how they are interacting. But sequence-based ecological studies nearly always use a comparative approach, and that requires relevant reference sequences, which are an extremely limited resource when it comes to microbial eukaryotes
Search for heavy long-lived charged R-hadrons with the ATLAS detector in 3.2 fb(-1) of proton-proton collision data at root s=13 TeV
A search for heavy long-lived charged R-hadrons is reported using a data sample corresponding to
3.2 fb−1 of proton–proton collisions at √s = 13 TeV collected by the ATLAS experiment at the Large
Hadron Collider at CERN. The search is based on observables related to large ionisation losses and slow
propagation velocities, which are signatures of heavy charged particles travelling significantly slower than
the speed of light. No significant deviations from the expected background are observed. Upper limits at
95% confidence level are provided on the production cross section of long-lived R-hadrons in the mass
range from 600 GeV to 2000 GeV and gluino, bottom and top squark masses are excluded up to 1580 GeV,
805 GeV and 890 GeV, respectively
License Required: French Lesbian Parents Confront the Obligation to Marry in order to Establish Kinship
Before 2013, French children could not have two parents of the same sex. For example, non-biologically related mothers in lesbian couples were legally invisible and prohibited to use second-parent adoption. A 2013 bill legalizing same-sex marriage and adoption authorized that option. However, this reform requires same-sex couples-but not heterosexual couples-to marry before establishing parental rights. Given this inequality, we ask: Compared to their heterosexual peers, do French same-sex couples with children marry more often? What do they think about same-sex marriage in general and their own marriages in particular? To answer these questions, we draw on survey responses and interviews from the first national cohort study of French same-sex couples, most of whom are lesbian, raising children born between 2011-2013 (n=162). We find significantly higher marriage rates among same-sex parents compared to different-sex parents. What may appear at first glance to be an unvarnished attachment to marriage is belied by discriminatory logics requiring couples to go against their stated ambivalence toward the institution of marriage in order to safeguard their parental rights. We argue that this burden is a form of legal violence that enforces heterosexist norms through legislation that was ostensibly enacted in the name of equality
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