39 research outputs found
Non-axisymmetric baby-skyrmion branes
We investigate the existence of non axisymmetric solutions in the
6-dimensional baby-Skyrme brane model. The brane is described by a localized
solution to the baby-Skyrme model extending in the extra dimensions. Such non
symmetric branes have already been constructed in the original 2+1-dimensional
baby-Skyrme model in flat space. We generalize this result to the case of
gravitating baby-Skyrme and in the context of extradimensions. These
non-trivial deformation from the axisymmetric shape appear for higher values of
the topological charge, so we consider the cases of , where is the
topological charge. We solve the coupled system of the Einstein and baby-Skyrme
equations by successive over relaxation method. We argue that the result may be
a possible resolution for the fermion mass hierarchy puzzle.Comment: 14 pages, 14 figure
Generation of large-amplitude coherent-state superposition via ancilla-assisted photon-subtraction
We propose and demonstrate a novel method to generate a large-amplitude
coherent-state superposition (CSS) via ancilla-assisted photon-subtraction. The
ancillary mode induces quantum interference of indistinguishable processes,
widening the controllability of quantum superposition at the conditional
output. We demonstrate the concept in the time domain, by a simple
time-separated two-photon subtraction from cw squeezed light. We observe the
largest CSS ever reported without any corrections, which will enable various
quantum information applications with CSS states.Comment: 5 pages, 4 figures; the revised versio
B_s mixing phase and lepton flavor violation in supersymmetric SU(5)
We inspect consequences of the latest B_s mixing phase measurements on lepton
flavor violation in a supersymmetric SU(5) theory. The O(1) phase, preferring a
non-vanishing squark mixing, generically implies tau -> (e + mu) gamma and mu
-> e gamma. Depending on the gaugino and the scalar mass parameters as well as
tan beta, the rates turn out to be detectable or even already excessive, if the
RR mass insertion of down-type squarks is nonzero. We find that it becomes easy
to reconcile B_s mixing phase with lepton flavor violation given: gaugino to
scalar squared mass ratio around 1/12, both LL and RR insertions with decent
sizes, and low tan beta.Comment: 11 pages, updated using phi_s from HFAG, conclusion unchange
Epidemiological Survey of Severe Fever with Thrombocytopenia Syndrome Virus in Ticks in Nagasaki, Japan
Severe fever with thrombocytopenia syndrome (SFTS) is an emerging disease endemic in East Asia. Transmitted to other organisms by infected ticks, the SFTS virus (SFTSV) and is endemic to Nagasaki in western Japan. However, epidemiological information regarding SFTSV in Nagasaki ticks has not been available to date. In this study, we began by examining the sensitivities of SFTSV gene detection by real-time RT-PCR and virus isolation in cultured cells and mice. These methods could detect SFTSV in the samples containing more than 4 × 10° ffu. Next, we attempted to isolate SFTSV and to detect viral gene in 2,222 nymph and adult ticks collected from May to August 2013 among seven regions of Nagasaki. However, neither virus isolation nor viral gene detection were confirmed in the tick pools. SFTSV positivity rates are considered to be very low in ticks, and viral loads are also very limited. Further investigations increasing the number of ticks and including larval samples as well as improved detection methods, may be required to find SFTSV-positive ticks in this region