pinecone/core-2020-05-10-deduplication huggingface dataset:
Solar Cycle Variation of Magnetic Flux Ropes in a Quasi-Static Coronal
  Evolution Model

The structure of electric current and magnetic helicity in the solar corona
is closely linked to solar activity over the 11-year cycle, yet is poorly
understood. As an alternative to traditional current-free "potential field"
extrapolations, we investigate a model for the global coronal magnetic field
which is non-potential and time-dependent, following the build-up and transport
of magnetic helicity due to flux emergence and large-scale photospheric
motions. This helicity concentrates into twisted magnetic flux ropes, which may
lose equilibrium and be ejected. Here, we consider how the magnetic structure
predicted by this model-in particular the flux ropes-varies over the solar
activity cycle, based on photospheric input data from six periods of cycle 23.
The number of flux ropes doubles from minimum to maximum, following the total
length of photospheric polarity inversion lines. However, the number of flux
rope ejections increases by a factor of eight, following the emergence rate of
active regions. This is broadly consistent with the observed cycle modulation
of coronal mass ejections, although the actual rate of ejections in the
simulation is about a fifth of the rate of observed events. The model predicts
that, even at minimum, differential rotation will produce sheared,
non-potential, magnetic structure at all latitudes.Comment: 18 pages, 6 figures, accepted for publication in Solar Physic
High speed excited multi-solitons in nonlinear Schr\"odinger equations

We consider the nonlinear Schr\"odinger equation with a general nonlinearity.
In dimension higher than 2, this equation admits travelling wave solutions with
a fixed profile which is not the ground state. This kind of profiles are called
excited states. In this paper, we construct solutions to NLS behaving like a
sum of N excited states which spread up quickly as time grows (which we call
multi-solitons). We also show that if the flow around one of these excited
states is linearly unstable, then the multi-soliton is not unique, and is
unstable
Time dependent fluctuations and particle production in cosmological de
  Sitter and anti-de Sitter spaces

We study the evolution of time-dependent fluctuations and particle production
in an expanding dS and contracting AdS universe. Using the functional
Schrodinger formalism we are able to probe the time dependent regime which is
out of the reach of the standard approximations like the Bogolyubov method. In
both cases, the evolution of fluctuations is governed by the harmonic
oscillator equation with time dependent frequency. In the case of an expanding
dS universe we explicitly show that the frequency of fluctuations produced at a
certain moment diminish in time, while the distribution of the created
particles quickly approaches the thermal radiation of the dS space. In the case
of a contracting AdS universe we show that the frequency of fluctuations
produced at a certain moment grow in time. Nominally, the temperature of
radiation diverges as the Big Crunch is approaching, however, increasing
oscillations of the spectrum make the temperature poorly defined, which is in
agreement with the fact that AdS space does not have an event horizon which
would cause thermal radiation. Unlimited growth of fluctuations indicates that
an eventual tunneling into AdS vacuum would have catastrophic consequences for
our universe.Comment: 8 pages, 6 figure
Measurement of the b quark forward-backward asymmetry around the Z0 peak
  using an inclusive tag

The b quark forward-backward asymmetry has been measured using hadronic Z0
decays collected by the OPAL experiment at LEP. Z0 -> bbbar decays were
selected using a combination of secondary vertex and lepton tags, and the sign
of the b quark charge was determined using an inclusive tag based on jet,
vertex and kaon charges. The results, corrected to the quark level, are:
  A^b_FB = 0.0582 +- 0.0153 +- 0.0012 at sqrt(s) = 89.50 GeV A^b_FB = 0.0977 +-
0.0036 +- 0.0018 at sqrt(s) = 91.26 GeV A^b_FB = 0.1221 +- 0.0123 +- 0.0025 at
sqrt(s) = 92.91 GeV where the first error is statistical and the second
systematic in each case. Within the framework of the Standard Model, the result
is interpreted as a measurement of the effective weak mixing angle for
electrons of sin2theta_W^eff,e = 0.23205 +- 0.00068.Comment: 23 pages, 5 figure
Constraints on Electron-quark Contact Interactions and Implications to
  models of leptoquarks and Extra Z Bosons

We update the global constraint on four-fermion $ee q q$ contact
interactions. In this update, we included the published data of H1 and ZEUS for
the 94--96 run in the $e^+ p$ mode and the newly published data of H1 for the
1999 run in the $e^- p$ mode. Other major changes are the new LEPII data on
hadronic cross sections above 189 GeV, and the atomic parity violation
measurement on Cesium because of a new and improved atomic calculation, which
drives the data within $1\sigma$ of the standard model value. The global data
do not show any evidence for contact interactions, and we obtain 95% C.L.
limits on the compositeness scale. A limit of $\Lambda^{eu}_{LL+(-)} > 23
(12.5)$ TeV is obtained. Implications to models of leptoquarks and extra Z
bosons are examined.Comment: 10 pages, a clarification of notation and a reference are adde
Quark-Lepton Mass Relation in a Realistic A4 Extension of the Standard
  Model

We propose a realistic A4 extension of the Standard Model involving a
particular quark-lepton mass relation, namely that the ratio of the third
family mass to the geometric mean of the first and second family masses are
equal for down-type quarks and charged leptons. This relation, which is
approximately renormalization group invariant, is usually regarded as arising
from the Georgi-Jarlskog relations, but in the present model there is no
unification group or supersymmetry. In the neutrino sector we propose a simple
modification of the so called Zee-Wolfenstein mass matrix pattern which allows
an acceptable reactor angle along with a deviation of the atmospheric and solar
angles from their bi-maximal values. Quark masses, mixing angles and CP
violation are well described by a numerical fit.Comment: 9 pages, 3 figures, version published in Phys. Lett.
New N=1 Dualities from M5-branes and Outer-automorphism Twists

We generalize recent construction of four-dimensional $\mathcal{N}=1$ SCFT
from wrapping six-dimensional $\mathcal{N}=(2,0)$ theory on a Riemann surface
to the case of $D$-type with outer-automorphism twists. This construction
allows us to build various dual theories for a class of $\mathcal{N}=1$ quiver
theories of $SO-USp$ type. In particular, we find there are five dual frames to
$SO(2N)/USp(2N-2)/G_2$ gauge theories with $(4N-4)/4N/8$ fundamental flavors,
where three of them are non-Lagrangian. We check the dualities by computing the
anomaly coefficients and the superconformal indices. In the process we verify
that the index of $D_4$ theory on a certain three punctured sphere with $Z_2$
and $Z_3$ twist lines exhibits the expected symmetry enhancement from $G_2
\times USp(6)$ to $E_7$.Comment: 56 pages, 29 colored figures; v2: minor corrections, references adde
The ratio of the beauty structure functions $R^b = F^b_L/F^b_2$ at low x

We study the structure functions $F_{k}^{b}(x,Q^{2})$ ($k=2, L$) and the
reduced cross section $\sigma_{r}^{b}(x,Q^{2})$ for small values of
Bjorken$^{,}$s $x$ variable with respect to the hard (Lipatov) pomeron for the
gluon distribution and provide a compact formula for the ratio $R^{b}$ that is
useful to extract the beauty structure function from the beauty reduced cross
section, in particular at DESY HERA. Also we show that the effects of the
nonlinear corrections to the gluon distribution tame the behavior of the beauty
structure function and the beauty reduced cross section at low $x$.Comment: 12 pages, 5 figurs, 1 table. arXiv admin note: text overlap with
  arXiv:hep-ph/0603017 by other author
Classical integrable systems and soliton equations related to
  eleven-vertex R-matrix

In our recent paper we suggested a natural construction of the classical
relativistic integrable tops in terms of the quantum $R$-matrices. Here we
study the simplest case -- the 11-vertex $R$-matrix and related ${\rm gl}_2$
rational models. The corresponding top is equivalent to the 2-body
Ruijsenaars-Schneider (RS) or the 2-body Calogero-Moser (CM) model depending on
its description. We give different descriptions of the integrable tops and use
them as building blocks for construction of more complicated integrable systems
such as Gaudin models and classical spin chains (periodic and with boundaries).
The known relation between the top and CM (or RS) models allows to re-write the
Gaudin models (or the spin chains) in the canonical variables. Then they assume
the form of $n$-particle integrable systems with $2n$ constants. We also
describe the generalization of the top to 1+1 field theories. It allows us to
get the Landau-Lifshitz type equation. The latter can be treated as non-trivial
deformation of the classical continuous Heisenberg model. In a similar way the
deformation of the principal chiral model is also described.Comment: 24 page
Stringy sphalerons and Gauss-Bonnet term

The effect of the Gauss--Bonnet term on the SU(2) non--Abelian regular stringy sphaleron solutions is studied within the non--perturbative treatment. It is found that the existence of regular solutions depends crucially on the value of the numerical factor \beta in front of the Gauss--Bonnet term in the four--dimensional effective action. Numerical solutions are constructed in the N=1, 2, 3 cases for different \beta below certain critical values \beta_N which decrease with growing N (N being the number of nodes of the Yang--Mills function). It is proved that for any static spherically symmetric asymptotically flat regular solution the ADM mass is exactly equal to the dilaton charge. No solutions were found for \beta above critical values, in particular, for \beta=1
Electromagnetic probes of hot and dense hadronic matter

The formalism of photon and dilepton productions in a thermal bath are discussed in the frame work of finite temperature field theory. The emission rate has been expressed in terms of the discontinuities or imaginary part of the photon self energy in the thermal bath. The photon and dilepton emissions have been computed by taking into account the in-medium modifications of the particles appearing in the internal loop of the self energy diagram using a phenomenological effective lagrangian approach. The results has been compared with the photon spectra measured by WA 98 collaboration at CERN SPS energies
Recurrence and ergodicity in unital *-algebras

Results concerning recurrence and ergodicity are proved in an abstract
Hilbert space setting based on the proof of Khintchine's recurrence theorem for
sets, and on the Hilbert space characterization of ergodicity. These results
are carried over to a non-commutative *-algebraic setting using the
GNS-construction. This generalizes the corresponding measure theoretic results,
in particular a variation of Khintchine's Theorem for ergodic systems, where
the image of one set overlaps with another set, instead of with itself.Comment: 16 page
Does the dynamics of sine-Gordon solitons predict active regions of DNA?

In this work we analyze the possibility that soliton dynamics in a simple
nonlinear model allows functionally relevant predictions of the behaviour of
DNA. This suggestion was first put forward by Salerno [Phys. Rev. A, vol. 44,
p. 5292 (1991)] by showing results indicating that sine-Gordon kinks were set
in motion at certain regions of a DNA sequence that include promoters. We
revisit that system and show that the observed behaviour has nothing to do with
promoters; on the contrary, it originates from the bases at the boundary, which
are not part of the studied genome. We explain this phenomenology in terms of
an effective potential for the kink center. This is further extended to
disprove recent claims that the dynamics of kinks [Lenholm and H\"ornquist,
Physica D, vol. 177, p. 233 (2003)] or breathers [Bashford, J. Biol. Phys.,
vol. 32, p. 27 (2006)] has functional significance. We conclude that no such
information can be extracted from this simple nonlinear model or its associated
effective potential.Comment: 17 pages, 7 figure
Investigating the nature of IGR J17454-2919 using X-ray and
  Near-Infrared observations

IGR J17454-2919 is a hard X-ray transient discovered by INTEGRAL on 2014
September 27. We report on our 20ks Chandra observation of the source,
performed about five weeks after the discovery, as well as on INTEGRAL and
Swift monitoring long-term observations. X-ray broad-band spectra of the source
are compatible with an absorbed power-law, $\Gamma\sim$1.6-1.8, ${\rm
N_H}\sim$(10-12)$\times 10^{22}\,{\rm cm}^{-2}$, with no trace of a cut-off in
the data up to about 100keV, and with an average absorbed 0.5-100keV flux of
about (7.1-9.7)${\times 10^{-10}~erg~cm^{-2}~s^{-1}}$. With Chandra, we
determine the most accurate X-ray position of IGR J17454-2919,
$\alpha_{J2000}$=17$^{h}$ 45$^{m}$ 27$^{s}$.69, $\delta_{J2000}$=
$-$29$^{\circ}$ 19$^{\prime}$ 53$^{\prime \prime}$.8 (90% uncertainty of
0$^{\prime\prime}$.6), consistent with the NIR source 2MASS J17452768-2919534.
We also include NIR investigations from our observations of the source field on
2014 October 6 with GROND. With the multi-wavelength information at hand, we
discuss the possible nature of IGR J17454-2919.Comment: 9 pages, 4 figures, accepted for publication in Ap
Constraints on Lorentz violation from gravitational Cherenkov radiation

Limits on gravitational Cherenkov radiation by cosmic rays are obtained and
used to constrain coefficients for Lorentz violation in the gravity sector
associated with operators of even mass dimensions, including
orientation-dependent effects. We use existing data from cosmic-ray telescopes
to obtain conservative two-sided constraints on 80 distinct Lorentz-violating
operators of dimensions four, six, and eight, along with conservative one-sided
constraints on three others. Existing limits on the nine minimal operators at
dimension four are improved by factors of up to a billion, while 74 of our
explicit limits represent stringent first constraints on nonminimal operators.
Prospects are discussed for future analyses incorporating effects of Lorentz
violation in the matter sector, the role of gravitational Cherenkov radiation
by high-energy photons, data from gravitational-wave observatories, the
tired-light effect, and electromagnetic Cherenkov radiation by gravitons.Comment: 10 pages, accepted for publication in Physics Letters
Limit on the production of a low-mass vector boson in
  $\mathrm{e}^{+}\mathrm{e}^{-} \to \mathrm{U}\gamma$, $\mathrm{U} \to
  \mathrm{e}^{+}\mathrm{e}^{-}$ with the KLOE experiment

The existence of a new force beyond the Standard Model is compelling because
it could explain several striking astrophysical observations which fail
standard interpretations. We searched for the light vector mediator of this
dark force, the $\mathrm{U}$ boson, with the KLOE detector at the DA$\Phi$NE
$\mathrm{e}^{+}\mathrm{e}^{-}$ collider. Using an integrated luminosity of 1.54
fb$^{-1}$, we studied the process $\mathrm{e}^{+}\mathrm{e}^{-} \to
\mathrm{U}\gamma$, with $\mathrm{U} \to \mathrm{e}^{+}\mathrm{e}^{-}$, using
radiative-return to search for a resonant peak in the dielectron invariant-mass
distribution. We did not find evidence for a signal, and set a 90\%~CL upper
limit on the mixing strength between the Standard Model photon and the dark
photon, $\varepsilon^2$, at $10^{-6}$--$10^{-4}$ in the 5--520~MeV/c$^2$ mass
range
MMRF for proteome annotation applied to human protein disease prediction

Proceedings of: 20th International Conference, ILP 2010, Florence, Italy, June 27-30, 2010Biological processes where every gene and protein participates is an essential knowledge for designing disease treatments. Nowadays, these annotations are still unknown for many genes and proteins. Since making annotations from in-vivo experiments is costly, computational predictors are needed for different kinds of annotation such as metabolic pathway, interaction network, protein family, tissue, disease and so on. Biological data has an intrinsic relational structure, including genes and proteins, which can be grouped by many criteria. This hinders the possibility of finding good hypotheses when attribute-value representation is used. Hence, we propose the generic Modular Multi-Relational Framework (MMRF) to predict different kinds of gene and protein annotation using Relational Data Mining (RDM). The specific MMRF application to annotate human protein with diseases verifies that group knowledge (mainly protein-protein interaction pairs) improves the prediction, particularly doubling the area under the precision-recall curvePublicad
Discovery of WASP-65b and WASP-75b : two hot Jupiters without highly inflated radii

Y. Gómez Maqueo Chew acknowledges postdoctoral funding support from the Vanderbilt Office of the Provost, through the Vanderbilt Initiative in Data-intensive Astrophysics (VIDA) and through a grant from the Vanderbilt International Office in support of the Vanderbilt-Warwick Exoplanets Collaboration. L. Delrez is a FRIA Ph.D. student of the FNRS. The research leading to these results has received funding from the European Community’s Seventh Framework Programme (FP7/2007-2013) under grant agreement number RG226604 (OPTICON). C. Liebig acknowledges the Qatar Foundation for support from QNRF grant NPRP-09-476-1-078. A.H.M.J. Triaud is a Swiss National Science Foundation fellow under grant number PBGEP2-145594.We report the discovery of two transiting hot Jupiters, WASP-65b (Mpl = 1.55 ± 0.16 MJ; Rpl = 1.11 ± 0.06 RJ), and WASP-75b (Mpl = 1.07 ± 0.05 MJ; Rpl = 1.27 ± 0.05 RJ). They orbit their host star every ~2.311, and ~2.484 days, respectively. The planet host WASP-65 is a G6 star (Teff = 5600 K, [Fe/H] = −0.07 ± 0.07, age ≳8 Gyr); WASP-75 is an F9 star (Teff = 6100 K, [Fe/H] = 0.07 ± 0.09, age ~ 3 Gyr). WASP-65b is one of the densest known exoplanets in the mass range 0.1 and 2.0 MJ (ρpl = 1.13 ± 0.08 ρJ), a mass range where a large fraction of planets are found to be inflated with respect to theoretical planet models. WASP-65b is one of only a handful of planets with masses of ~1.5 MJ, a mass regime surprisingly underrepresented among the currently known hot Jupiters. The radius of WASP-75b is slightly inflated (≲10%) as compared to theoretical planet models with no core, and has a density similar to that of Saturn (ρpl = 0.52 ± 0.06 ρJ).Publisher PDFPeer reviewe
Non-standard shocks in the Buckley-Leverett equation

It is shown how delta shock waves which consist of Dirac delta distributions and classical shocks can be used to construct non-monotone solutions of the Buckley–Leverett equation. These solutions are interpreted using a recent variational definition of delta shock waves in which the Rankine–Hugoniot deficit is explicitly accounted for [6]. The delta shock waves are also limits of approximate solutions constructed using a recent extension of the weak asymptotic method to complex-valued approximations [15]. Finally, it is shown how these non-standard shocks can be fitted together to construct similarity and traveling-wave solutions which are non-monotone, but still admissible in the sense that characteristics either enter or are parallel to the shock trajectories
Orthogonal Laurent polynomials on the unit circle, extended CMV ordering and 2D Toda type integrable hierarchies

We connect the theory of orthogonal Laurent polynomials on the unit circle and the theory of Toda-like integrable systems using the Gauss-Borel factorization of a Cantero-Moral-Velazquez moment matrix, that we construct in terms of a complex quasi-definite measure supported on the unit circle. The factorization of the moment matrix leads to orthogonal Laurent polynomials on the unit circle and the corresponding second kind functions. We obtain Jacobi operators, 5-term recursion relations, Christoffel-Darboux kernels, and corresponding Christoffel-Darboux formulas from this point of view in a completely algebraic way. We generalize the Cantero- Moral-Velazquez sequence of Laurent monomials, recursion relations, Christoffel-Darboux kernels, and corresponding Christoffel-Darboux formulas in this extended context. We introduce continuous deformations of the moment matrix and we show how they induce a time dependent orthogonality problem related to a Toda-type integrable system, which is connected with the well known Toeplitz lattice. We obtain the Lax and Zakharov-Shabat equations using the classical integrability theory tools. We explicitly derive the dynamical system associated with the coefficients of the orthogonal Laurent polynomials and we compare it with the classical Toeplitz lattice dynamical system for the Verblunsky coefficients of Szego polynomials for a positive measure. Discrete flows are introduced and related to Darboux transformations. Finally, we obtain the representation of the orthogonal Laurent polynomials (and their second kind functions), using the formalism of Miwa shifts in terms of tau-functions and the subsequent bilinear equations
Subglacial processes on an Antarctic ice stream bed 1: sediment transport and bedform genesis inferred from marine geophysics

The spatial pattern and morphometry of bedforms and their relationship to sediment thickness have been analysed in the Marguerite Bay Palaeo-ice stream Trough, western Antarctic Peninsula. Over 17 000 glacial landforms were measured from geophysical datasets, and sediment thickness maps were generated from acoustic sub-bottom profiler data. These analyses reveal a complex bedform pattern characterised by considerable spatial diversity, influenced heavily by the underlying substrate. The variability in length and density of mega-scale lineations indicates an evolving bedform signature, whereby landforms are preserved at different stages of maturity. Lineation generation and attenuation is associated with regions of thick, soft till where deformation was likely to be the greatest. The distribution of soft till and the localised extent of grounding-zone wedges (GZWs) indicate a dynamic sedimentary system characterised by considerable spatio-temporal variability in sediment erosion, transport and deposition. Formation of GZWs on the outer shelf of Marguerite Trough, within the error range of the radiocarbon dates, requires large sediment fluxes (upwards of 1000 m3 a−1 (m grounding line width)−1), and a >1 m thick mobile till layer, or rapid basal sliding velocities (upwards of 6 km a−1)
Synergies between neutrino oscillation experiments: an ‘adequate’ configuration for LBNO

Determination of the neutrino mass hierarchy, octant of the mixing angle θ 23 and the CP violating phase δ CP are the unsolved problems in neutrino oscillation physics today. In this paper our aim is to obtain the minimum exposure required for the proposed Long Baseline Neutrino Oscillation (LBNO) experiment to determine the above unknowns. We emphasize on the advantage of exploiting the synergies offered by the existing and upcoming long-baseline and atmospheric neutrino experiments in economising the LBNO configuration. In particular, we do a combined analysis for LBNO, T2K, NO ν A and INO. We consider three prospective LBNO setups — CERN-Pyhäsalmi (2290 km), CERN-Slanic (1500 km) and CERN-Fréjus (130 km) and evaluate the adequate exposure required in each case. Our analysis shows that the exposure required from LBNO can be reduced considerably due to the synergies arising from the inclusion of the other experiments