12,180 research outputs found
Higgs bosons of a supersymmetric model at the Large Hadron Collider
It is found that CP symmetry may be explicitly broken in the Higgs sector of
a supersymmetric model with two extra neutral gauge bosons at the
one-loop level. The phenomenology of the model, the Higgs sector in particular,
is studied for a reasonable parameter space of the model, in the presence of
explicit CP violation at the one-loop level. At least one of the neutral Higgs
bosons of the model might be produced via the fusion process at the Large
Hadron Collider.Comment: 23 pages, 5 figures, JHE
Gregory-Laflamme instability of a slowly rotating black string
We study the Gregory-Laflamme instability of a 5-dimensional slowly rotating
black string in which the 4-dimensional section is described by the Kerr black
hole. We treat the rotation in a perturbative way introducing a small parameter
for the rotation. It is found that rotation makes the Gregory-Laflamme
instability stronger. Both the critical wavelength at the onset of instability
and the growth time-scale are found to decrease as the rotation increases.Comment: 26 pages, 1 figur
Unsupervised Holistic Image Generation from Key Local Patches
We introduce a new problem of generating an image based on a small number of
key local patches without any geometric prior. In this work, key local patches
are defined as informative regions of the target object or scene. This is a
challenging problem since it requires generating realistic images and
predicting locations of parts at the same time. We construct adversarial
networks to tackle this problem. A generator network generates a fake image as
well as a mask based on the encoder-decoder framework. On the other hand, a
discriminator network aims to detect fake images. The network is trained with
three losses to consider spatial, appearance, and adversarial information. The
spatial loss determines whether the locations of predicted parts are correct.
Input patches are restored in the output image without much modification due to
the appearance loss. The adversarial loss ensures output images are realistic.
The proposed network is trained without supervisory signals since no labels of
key parts are required. Experimental results on six datasets demonstrate that
the proposed algorithm performs favorably on challenging objects and scenes.Comment: 16 page
Electroneutrality and the Friedel sum rule in a Luttinger liquid
Screening in one-dimensional metals is studied for arbitrary
electron-electron interactions. It is shown that for finite-range interactions
(Luttinger liquid) electroneutrality is violated. This apparent inconsistency
can be traced to the presence of external screening gates responsible for the
effectively short-ranged Coulomb interactions. We also draw attention to the
breakdown of linear screening for wavevectors close to 2 K_f.Comment: 4 pages REVTeX, incl one figure, to appear in Phys.Rev.Let
Search for axion-like particles using a variable baseline photon regeneration technique
We report the first results of the GammeV experiment, a search for milli-eV
mass particles with axion-like couplings to two photons. The search is
performed using a "light shining through a wall" technique where incident
photons oscillate into new weakly interacting particles that are able to pass
through the wall and subsequently regenerate back into detectable photons. The
oscillation baseline of the apparatus is variable, thus allowing probes of
different values of particle mass. We find no excess of events above background
and are able to constrain the two-photon couplings of possible new scalar
(pseudoscalar) particles to be less than 3.1x10^{-7} GeV^{-1} (3.5x10^{-7}
GeV^{-1}) in the limit of massless particles.Comment: 5 pages, 4 figures. This is the version accepted by PRL and includes
updated limit
A unified Erd\H{o}s-P\'{o}sa theorem for cycles in graphs labelled by multiple abelian groups
In 1965, Erd\H{o}s and P\'{o}sa proved that there is a duality between the
maximum size of a packing of cycles and the minimum size of a vertex set
hitting all cycles. Such a duality does not hold for odd cycles, and Dejter and
Neumann-Lara asked in 1988 to find all pairs of integers where
such a duality holds for the family of cycles of length modulo . We
characterise all such pairs, and we further generalise this characterisation to
cycles in graphs labelled with a bounded number of abelian groups, whose values
avoid a bounded number of elements of each group. This unifies almost all known
types of cycles that admit such a duality, and it also provides new results.
Moreover, we characterise the obstructions to such a duality in this setting,
and thereby obtain an analogous characterisation for cycles in graphs
embeddable on a fixed compact orientable surface.Comment: 37 pages, 2 figure
Some entanglement features of three-atoms Tavis-Cummings model: Cooperative case
In this paper we consider a system of identical three two-level atoms
interacting at resonance with a single-mode of the quantized field in a
lossless cavity. The initial cavity field is prepared in the coherent state
while the atoms are taken initially to be either in the uppermost excited state
"" or The -state or the -state. For this
system we investigate different kinds of atomic inversion and entanglement,
which arise between the different parts of the system due to the interaction.
Also the relationship, between entanglement and some other nonclassical effects
in the statistical properties, such as collapses and revivals in the atomic
inversion where superharmonic effects appear, is discussed. The -functions
for different cases are discussed. Most remarkably it is found that the
-state is more robust against energy losses, showing almost
coherent trapping and Schr\"odinger-cat states can not be produced from such
state. Also the entanglement of -state is more robust than the
-state. Another interesting feature found is that the state which
has no pairwise entanglement initially will have a much improvement of such
pairwise entanglement through the evolution. Sudden death and sudden revival of
atoms-pairwise entanglement are produced with the -state.Comment: 14 pages, 7 figure
Conditional Intensity and Gibbsianness of Determinantal Point Processes
The Papangelou intensities of determinantal (or fermion) point processes are
investigated. These exhibit a monotonicity property expressing the repulsive
nature of the interaction, and satisfy a bound implying stochastic domination
by a Poisson point process. We also show that determinantal point processes
satisfy the so-called condition which is a general form of
Gibbsianness. Under a continuity assumption, the Gibbsian conditional
probabilities can be identified explicitly.Comment: revised and extende
Расчет и выбор шахтного электрооборудования
Реферат
Выпускная квалификационная работа объемом 101 страницы, содержит 15 рисунков, 39 таблиц, 21 используемых источника.
Ключевые слова: СИСТЕМА ЭЛЕКТРОСНАБЖЕНИЯ, ВНУТРИЦЕХОВОЕ ЭЛЕКТРОСНАБЖЕНИЕ, ЭЛЕКТРИЧЕСКИЕ НАГРУЗКИ, КОМПЛЕКТНОЕ ЭЛЕКТРООБОРУДОВАНИЕ,
Объектом исследования является система электроснабжения ОАО «Шахта Распадская» г. Междуреченск.
В результате выполнения работы был произведён выбор схемы внешнего и внутреннего электроснабжения, высоко- и низковольтное оборудование.
Выпускная квалификационная работа выполнена в текстовом редакторе Microsoft Word 2010.
Работа представлена на CD - диске (в конверте на обороте обложки).Final qualifying work of 101 pages, contains 15 figures, 39 tables, 21 sources used.
Keywords: Electric power supply systems, intrashop POWER, ELECTRICAL LOAD COMPLETE ELECTRICAL,
The object of research is the system of power supply of "Raspadskaya" Mezhdurechensk.
As a result of the work was made selection of the internal and external power supply, high and low-voltage equipment.
Final qualifying work carried out in Microsoft Word 2010 word processor.
The work is presented on the CD - ROM (in an envelope on the back cover)
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