pinecone/core-2020-05-10-deduplication huggingface dataset:
Dark energy imprints on the kinematic Sunyaev-Zel'dovich signal

We investigate the imprint of dark energy on the kinetic Sunyaev-Zel'dovich
(kSZ) angular power spectrum on scales of $\ell=1000$ to $10000$, and find that
the kSZ signal is sensitive to the dark energy parameter. For example, varying
the constant $w$ by 20\% around $w=-1$ results in a $\gtrsim10\%$ change on the
kSZ spectrum; changing the dark energy dynamics parametrized by $w_a$ by
$\pm0.5$, a 30\% change on the kSZ spectrum is expected. We discuss the
observational aspects and develop a fitting formula for the kSZ power spectrum.
Finally, we discuss how the precise modeling of the post-reionization signal
would help the constraints on patchy reionization signal, which is crucial for
measuring the duration of reionization.Comment: 12 pages, 9 figures, 2 table
The circumstellar environment and evolutionary state of the supergiant
  B[e] star Wd1-9

The location of the supergiant (sg)B[e] star Wd1-9 within the coeval
starburst cluster Westerlund 1 allows for its placement in a detailed post-Main
Sequence evolutionary scheme and hence we have utilised a comprehensive
multiwavelength dataset to determine its physical properties and relation to
other sgB[e] stars and the evolved stellar population of Wd1. Wd1-9 is found to
exhibit the rich optical emission line spectrum that is characteristic of
sgB[e] stars, while dust mass, composition and disc geometry determined from
mid-IR data resemble those of other well known examples such as R126. Extreme
historical and ongoing mass loss is inferred from radio observations, while the
X-ray properties of Wd1-9 imply the presence of high temperature plasma within
the system and are directly comparable to a number of confirmed short-period
colliding wind binaries within Wd1. The most complete explanation for the
observational properties of Wd1-9 is that it is a massive interacting binary
currently undergoing, or recently exited from, rapid Roche-lobe overflow,
supporting the hypothesis that binarity mediates the formation of (a subset of)
sgB[e] stars. The mass loss rate of Wd1-9 is consistent with such an assertion,
while viable progenitor and descendent systems are present within Wd1 and other
examples of sgB[e] binaries have previously been found. Moreover, the rarity of
sgB[e] stars - only two examples are identified from a census of ~68 young
massive Galactic clusters and associations containing ~600 post-Main Sequence
stars - is explicable given the rapidity (~10^4yr) expected for this phase of
massive binary evolution.Comment: 16 pages, 7 figures, accepted for publication in Astronomy and
  Astrophysic
Conformal symmetry of the Lange-Neubert evolution equation

The Lange-Neubert evolution equation describes the scale dependence of the
wave function of a meson built of an infinitely heavy quark and light antiquark
at light-like separations, which is the hydrogen atom problem of QCD. It has
numerous applications to the studies of B-meson decays. We show that the kernel
of this equation can be written in a remarkably compact form, as a logarithm of
the generator of special conformal transformation in the light-ray direction.
This representation allows one to study solutions of this equation in a very
simple and mathematically consistent manner. Generalizing this result, we show
that all heavy-light evolution kernels that appear in the renormalization of
higher-twist B-meson distribution amplitudes can be written in the same form.Comment: 8 page
GEANT4 simulation of the neutron background of the C$_6$D$_6$ set-up for
  capture studies at n_TOF

The neutron sensitivity of the C$_6$D$_6$ detector setup used at n_TOF for
capture measurements has been studied by means of detailed GEANT4 simulations.
A realistic software replica of the entire n_TOF experimental hall, including
the neutron beam line, sample, detector supports and the walls of the
experimental area has been implemented in the simulations. The simulations have
been analyzed in the same manner as experimental data, in particular by
applying the Pulse Height Weighting Technique. The simulations have been
validated against a measurement of the neutron background performed with a
$^\mathrm{nat}$C sample, showing an excellent agreement above 1 keV. At lower
energies, an additional component in the measured $^\mathrm{nat}$C yield has
been discovered, which prevents the use of $^\mathrm{nat}$C data for neutron
background estimates at neutron energies below a few hundred eV. The origin and
time structure of the neutron background have been derived from the
simulations. Examples of the neutron background for two different samples are
demonstrating the important role of accurate simulations of the neutron
background in capture cross section measurements
Effective actions of a Gauss-Bonnet brane world with brane curvature
  terms

We consider a warped brane world scenario with two branes, Gauss-Bonnet
gravity in the bulk, and brane localised curvature terms. When matter is
present on both branes, we investigate the linear equations of motion and
distinguish three regimes. At very high energy and for an observer on the
positive tension brane, gravity is four dimensional and coupled to the brane
bending mode in a Brans-Dicke fashion. The coupling to matter and brane bending
on the negative tension brane is exponentially suppressed. In an intermediate
regime, gravity appears to be five dimensional while the brane bending mode
remains four dimensional. At low energy, matter on both branes couple to
gravity for an observer on the positive tension brane, with a Brans-Dicke
description similar to the 2--brane Randall-Sundrum setup. We also consider the
zero mode truncation at low energy and show that the moduli approximation fails
to reproduce the low energy action.Comment: 14 page
A note on the RG flow in (N=1, D=4) Supergravity and applications to $Z_{3}$ orbifold/orientifold compactification

We apply the standard approach of RG flow for the gauge couplings in N=1 D=4 Supergravity to show how to match its results with the heterotic $Z_3$ orbifold and Type IIB ${Z_3}$ orientifold-based models. Using only supergravity, anomaly cancellation and the requirement of unification we determine the part of the K\"ahler potential of the model invariant under the symmetries of the model. For heterotic orbifolds/type IIB orientifolds, this shows that the lowest order K\"ahler term of the dilaton has the structure $-\ln(S+{\bar S})$ in agreement with string calculations. The structure of the holomorphic coupling is also found from arguments of unification and anomaly cancellation under the conjectured $SL(2,Z)_{T_i}$ symmetries of the models. In the case of the $Z_3$ orientifold the holomorphic coupling necessarily contains a part with coefficient proportional to the one loop beta function, again in agreement with string calculations. Finally, we comment on the values of the unification scale and examine the possibility of mirage unification in which the effective unification scale may be situated far above the string scale
On the Consistency of Quantum Geometrodynamics and Quantum Field Theories in the Bohm-de Broglie Interpretation

We consider quantum geometrodynamics and parametrized quantum field theories in the framework of the Bohm-de Broglie interpretation. In the first case, and following the lines of our previous work \cite{must}, we show the consistency of the theory for any quantum potential, completing the scenarios for canonical quantum cosmology presented there. In the latter case we prove the consistency of a scalar field theory in Minkowski spacetime for any quantum potential, and we exhibit a concrete example where Lorentz invariance of individual events is broken
The spectrum of multi-flavor QCD_2 and the non-Abelian Schwinger
  equation

Massless $QCD_2$ is dominated by classical configurations in the large $N_f$
limit. We use this observation to study the theory by finding solutions to
equations of motion, which are the non-Abelian generalization of the Schwinger
equation. We find that the spectrum consists of massive mesons with $M^2={e^2
N_f\over 2\pi}$ which correspond to Abelian solutions. We generalize previously
discovered non-Abelian solutions and discuss their interpretation. We prove a
no-go theorem ruling out the existence of soliton solutions. Thus the
semi-classical approximation shows no baryons in the case of massless quarks, a
result derived before in the strong-coupling limit only.Comment: 17 pages, Latex. 1 figur
The primitive solutions to x^3+y^9=z^2

We determine the rational integers x,y,z such that x^3+y^9=z^2 and
gcd(x,y,z)=1. First we determine a finite set of curves of genus 10 such that
any primitive solution to x^3+y^9=z^2 corresponds to a rational point on one of
those curves. We observe that each of these genus 10 curves covers an elliptic
curve over some extension of Q. We use this cover to apply a Chabauty-like
method to an embedding of the curve in the Weil restriction of the elliptic
curve. This enables us to find all rational points and therefore deduce the
primitive solutions to the original equation.Comment: 8 page
Single particle spectra based of modern effective interactions

The self-consistent Green's function method is applied to 16O using a
G-matrix and Vucom as effective interactions, both derived from the Argonne v18
potential. The present calculations are performed in a larger model space than
previously possible. The experimental single particle spectra obtained with the
G-matrix are essentially independent of the oscillator length of the basis. The
results shows that Vucom better reproduces spin-orbit splittings but tends to
overestimate the gap at the Fermi energy.Comment: 5 pages, 5 figures. Submitted to Phys. Lett.
Genome-wide Association Analysis Identifies 14 New Risk Loci for Schizophrenia

Schizophrenia is a heritable disorder with substantial public health impact. We conducted a multi-stage genome-wide association study (GWAS) for schizophrenia beginning with a Swedish national sample (5,001 cases, 6,243 controls) followed by meta-analysis with prior schizophrenia GWAS (8,832 cases, 12,067 controls) and finally by replication of SNPs in 168 genomic regions in independent samples (7,413 cases, 19,762 controls, and 581 trios). In total, 22 regions met genome-wide significance (14 novel and one previously implicated in bipolar disorder). The results strongly implicate calcium signaling in the etiology of schizophrenia, and include genome-wide significant results for CACNA1C and CACNB2 whose protein products interact. We estimate that ∼8,300 independent and predominantly common SNPs contribute to risk for schizophrenia and that these collectively account for most of its heritability. Common genetic variation plays an important role in the etiology of schizophrenia, and larger studies will allow more detailed understanding of this devastating disorder
Superintegrability in a two-dimensional space of nonconstant curvature

A Hamiltonian with two degrees of freedom is said to be superintegrable if it admits three functionally independent integrals of the motion. This property has been extensively studied in the case of two-dimensional spaces of constant (possibly zero) curvature when all the independent integrals are either quadratic or linear in the canonical momenta. In this article the first steps are taken to solve the problem of superintegrability of this type on an arbitrary curved manifold in two dimensions. This is done by examining in detail one of the spaces of revolution found by G. Koenigs. We determine that there are essentially three distinct potentials which when added to the free Hamiltonian of this space have this type of superintegrability. Separation of variables for the associated Hamilton–Jacobi and Schrödinger equations is discussed. The classical and quantum quadratic algebras associated with each of these potentials are determined
A Census of Variability in Globular Cluster M68 (NGC 4590)

We analyse 20 nights of CCD observations in the V and I bands of the globular
cluster M68 (NGC 4590), using these to detect variable objects. We also
obtained electron-multiplying CCD (EMCCD) observations for this cluster in
order to explore its core with unprecedented spatial resolution from the
ground.
  We reduced our data using difference image analysis, in order to achieve the
best possible photometry in the crowded field of the cluster. In doing so, we
showed that when dealing with identical networked telescopes, a reference image
from any telescope may be used to reduce data from any other telescope, which
facilitates the analysis significantly. We then used our light curves to
estimate the properties of the RR Lyrae (RRL) stars in M68 through Fourier
decomposition and empirical relations. The variable star properties then
allowed us to derive the cluster's metallicity and distance.
  We determine new periods for the variable stars, and search for new
variables, especially in the core of the cluster where our method performs
particularly well. We detect an additional 4 SX Phe stars, and confirm the
variability of another star, bringing the total number of confirmed variable
stars in this cluster to 50. We also used archival data stretching back to 1951
in order to derive period changes for some of the single-mode RRL stars, and
analyse the significant number of double-mode RRL stars in M68. Furthermore, we
find evidence for double-mode pulsation in one of the SX Phe stars in this
cluster. Using the different types of variables, we derived an estimate of the
metallicity, [Fe/H]=$-2.07 \pm 0.06$ on the ZW scale, and 4 independent
estimates of the distance modulus ($\mu_0 \sim$ 15.00 mag) for this cluster.
Thanks to the first use of difference image analysis on time-series
observations of M68, we are now confident that we have a complete census of the
RRL stars in this cluster.Comment: 25 pages, 18 figures, A&A in pres
Quantum magnonics: magnon meets superconducting qubit

The techniques of microwave quantum optics are applied to collective spin
excitations in a macroscopic sphere of ferromagnetic insulator. We demonstrate,
in the single-magnon limit, strong coupling between a magnetostatic mode in the
sphere and a microwave cavity mode. Moreover, we introduce a superconducting
qubit in the cavity and couple the qubit with the magnon excitation via the
virtual photon excitation. We observe the magnon-vacuum-induced Rabi splitting.
The hybrid quantum system enables generation and characterization of
non-classical quantum states of magnons.Comment: 10 pages, 6 figure
Exploring Lovelock theory moduli space for Schroedinger solutions

We look for Schroedinger solutions in Lovelock gravity in $D > 4$. We span
the entire parameter space and determine parametric relations under which the
Schroedinger solution exists. We find that in arbitrary dimensions pure
Lovelock theories have Schroedinger solutions of arbitrary radius, on a
co-dimension one locus in the Lovelock parameter space. This co-dimension one
locus contains the subspace over which the Lovelock gravity can be written in
the Chern-Simons form. Schroedinger solutions do not exist outside this locus
and on this locus they exist for arbitrary dynamical exponent z. This freedom
in z is due to the degeneracy in the configuration space. We show that this
degeneracy survives certain deformation away from the Lovelock moduli space.Comment: 22 pages, Title changed, contents revised with focus on Schroedinger
  solutions, extra references added, to match with the version published in
  Nucl. Phys.
The Gamma-Ray Emitting Radio-Loud Narrow-Line Seyfert 1 Galaxy PKS
  2004-447 I. The X-Ray View

As part of the TANAMI multiwavelength progam, we discuss new X-ray
observations of the $\gamma$-ray and radio-loud Narrow Line Seyfert galaxy
($\gamma$-NLS1) PKS 2004-447. The active galaxy is a member of a small sample
of radio-loud NLS1s detected in $\gamma$-rays by the Fermi Large Area
Telescope. It is the radio-loudest and only southern-hemisphere source in this
sample. We present results from our X-ray monitoring program comprised of Swift
snapshot observations from 2012 through 2014 and two new X-ray observations
with XMM-Newton in 2012. We analyze the X-ray spectrum and variability of this
peculiar source using supplementary archival data from 2004 and 2011. The
(0.5-10) keV spectrum is well described by a flat power law, which can be
interpreted as non-thermal emission from a relativistic jet. The source
exhibits moderate flux variability on timescales of both months and years.
Correlated brightness variations in the (0.5-2) keV and (2-10) keV bands are
explained by a single variable spectral component, such as the jet. A possible
soft excess seen in the data from 2004 cannot be confirmed by the new \xmm{}
observations in 2012. Any contribution to the total flux in 2004 is less than
$20\%$ of the power-law component. The (0.5-10) keV luminosities of PKS
2004-447 are in the range of (0.5--2.7)$\times10^{44}\,\mathrm{erg\,s}^{-1}$. A
comparison of the X-ray properties among the known $\gamma$-NLS1 galaxies shows
that X-ray spectrum is typically dominated by a flat power law without
intrinsic absorption. These objects are moderately variable in their
brightness, while spectral variability is observed in at least two sources. The
major difference across the X-ray spectra of $\gamma$-NLS1s is the luminosity,
which spans a range of almost two orders of magnitude, from
$10^{44}\,\mathrm{erg\,s}^{-1}$ to $10^{46}\,\mathrm{erg\,s}^{-1}$ in the
(0.5-10) keV band.Comment: 12 pages, 12 figures, accepted by Astronomy & Astrophysics on
  02/10/1
The HARPS search for southern extra-solar planets : XXXVIII. Bayesian re-analysis of three systems. New super-Earths, unconfirmed signals, and magnetic cycles

We present the analysis of the entire HARPS observations of three stars that host planetary systems: HD 1461, HD 40307, and HD 204313. The data set spans eight years and contains more than 200 nightly averaged velocity measurements for each star. This means that it is sensitive to both long-period and low-mass planets and also to the effects induced by stellar activity cycles. We modelled the data using Keplerian functions that correspond to planetary candidates and included the short- and long-term effects of magnetic activity. A Bayesian approach was taken both for the data modelling, which allowed us to include information from activity proxies such as log R'HK in the velocity modelling, and for the model selection, which permitted determining the number of significant signals in the system. The Bayesian model comparison overcomes the limitations inherent to the traditional periodogram analysis. We report an additional super-Earth planet in the HD 1461 system. Four out of the six planets previously reported for HD 40307 are confirmed and characterised. We discuss the remaining two proposed signals. In particular, we show that when the systematic uncertainty associated with the techniques for estimating model probabilities are taken into account, the current data are not conclusive concerning the existence of the habitable-zone candidate HD 40307 g. We also fully characterise the Neptune-mass planet that orbits HD 204313 in 34.9 days.Publisher PDFPeer reviewe
Measurement of CP asymmetry in $B^0_s \rightarrow D^{\mp}_s K^{\pm}$ decays

We report on measurements of the time-dependent CP violating observables in $B^0_s\rightarrow D^{\mp}_s K^{\pm}$ decays using a dataset corresponding to 1.0 fb$^{-1}$ of pp collisions recorded with the LHCb detector. We find the CP violating observables $C_f=0.53\pm0.25\pm0.04$, $A^{\Delta\Gamma}_f=0.37\pm0.42\pm0.20$, $A^{\Delta\Gamma}_{\bar{f}}=0.20\pm0.41\pm0.20$, $S_f=-1.09\pm0.33\pm0.08$, $S_{\bar{f}}=-0.36\pm0.34\pm0.08$, where the uncertainties are statistical and systematic, respectively. Using these observables together with a recent measurement of the $B^0_s$ mixing phase $-2\beta_s$ leads to the first extraction of the CKM angle $\gamma$ from $B^0_s \rightarrow D^{\mp}_s K^{\pm}$ decays, finding $\gamma$ = (115$_{-43}^{+28}$)$^\circ$ modulo 180$^\circ$ at 68% CL, where the error contains both statistical and systematic uncertainties
Precise QCD predictions for the production of Higgs + jet final states

We compute the cross section and differential distributions for the production of a Standard Model Higgs boson in association with a hadronic jet to next-to-next-to-leading order in quantum chromodynamics (QCD). In Higgs boson studies at the LHC, final states containing one jet are a dominant contribution to the total event rate, and their understanding is crucial for improved determinations of the Higgs boson properties. We observe substantial higher order corrections to transverse momentum spectra and rapidity distributions in Higgs-plus-one-jet final states. Their inclusion stabilises the residual theoretical uncertainty of the predictions around 9%, thereby providing important input to precision studies of the Higgs boson
Microscopic shell-model description of the exotic nucleus C-16

The structure of the neutron-rich carbon nucleus
16
C is described by introducing a new microscopic shell model of no-core type. The model
space is composed of the 0
s
,0
p
,1
s
0
d
,and1
p
0
f
shells. The effective interaction is microscopically derived from the CD-Bonn potential and the
Coulomb force through a unitary transformation theory. Calculated low-lying energy levels of
16
C agree well with the experimental values. The
B(
E2
;
2
+
1
→
0
+
1
)
value is calculated with the bare charges. The anomalously hindered
B(
E2
)
value for
16
C, measured recently, is well reproduced.
©
2007 Elsevier B.V.status: publishe
Observation of isoscalar multipole strengths in exotic doubly-magic 56Ni in inelastic αscattering in inverse kinematics

The Isoscalar Giant Monopole Resonance (ISGMR) and the Isoscalar Giant Dipole Resonance (ISGDR) compression modes have been studied in the doubly-magic unstable nucleus 56Ni. They were measured by inelastic α-particle scattering in inverse kinematics at 50MeV/u with the MAYA active target at the GANIL facility. The centroid of the ISGMR has been obtained at Ex=19.1 ±0.5MeV. Evidence for the low-lying part of the ISGDR has been found at Ex=17.4 ±0.7MeV. The strength distribution for the dipole mode shows similarity with the prediction from the Hartree–Fock (HF) based random-phase approximation (RPA)[1]. These measurements confirm inelastic α-particle scattering as a suitable probe for exciting the ISGMR and the ISGDR modes in radioactive isotopes in inverse kinematics.status: publishe
From Maxwell-Chern-Simons theory in AdS 3 towards hydrodynamics in 1 + 1 dimensions

We study Abelian Maxwell-Chern-Simons theory in three-dimensional AdS black hole backgrounds for both integer and non-integer Chern-Simons coupling. Such theories can be derived from various string theory constructions, which we review in the present work. In particular we find exact solutions in the low frequency, low momentum limit, ω, k ≪ T (hydrodynamic limit). Using the holographic principle, we translate our results into correlation functions of vector and scalar operators in the dual strongly coupled 1 + 1-dimensional quantum field theory with a chiral anomaly at non-zero temperature T . Starting from the conformal case we show applicability of the hydrodynamic limit and discuss extensions to the non-conformal case. Correlation functions in the conformal case are compared to an exact field theoretic computation
Green-Schwarz mechanism and α ′-deformed Courant brackets

We establish that the unusual two-form gauge transformations needed in the Green-Schwarz anomaly cancellation mechanism fit naturally into an α ′-deformed generalized geometry. The algebra of gauge transformations is a consistent deformation of the Courant bracket and features a nontrivial modification of the diffeomorphism group. This extension of generalized geometry emerged from a ‘doubled α ′-geometry’, which provides a construction of exactly gauge and T-duality invariant α ′ corrections to the effective action