pinecone/core-2020-05-10-deduplication huggingface dataset:
Space-Time Noncommutativity from Particle Mechanics

We exploit the reparametrization symmetry of a relativistic free particle to
impose a gauge condition which upon quantization implies space-time
noncommutativity. We show that there is an algebraic map from this gauge back
to the standard `commuting' gauge. Therefore the Poisson algebra, and the
resulting quantum theory, are identical in the two gauges. The only difference
is in the interpretation of space-time coordinates. The procedure is repeated
for the case of a coupling with a constant electromagnetic field, where the
reparametrization symmetry is preserved. For more arbitrary interactions, we
show that standard dynamical system can be rendered noncommutative in space and
time by a simple change of variables.Comment: 13 p
Boson stars in SU(2) Yang-Mills-scalar field theories

We present new spherically symmetric solutions of an SU(2)
Einstein-Yang-Mills model coupled to a doublet of scalar fields. Sequences of
asymptotically flat, Yang-Mills-boson star-type configurations are constructed
numerically by considering an appropriate time-dependent ansatz for the complex
scalar field and a static, purely magnetic SU(2)-Yang-Mills potential. Both
nodeless as well as solutions with nodes of the scalar field and gauge
potential are considered. We find that these solutions share many features with
the "pure'' boson stars.Comment: 9 Latex pages including 3 figures; references added; accepted for
  publication in Phys. Lett.
Noncommutativity of Lepton Mass Matrices: Flavor Mixing and CP Violation

I follow a lesson learnt from Heisenberg's matrix Quantum Mechanics to study the property of lepton flavor mixing and CP violation. I show that the commutator of lepton mass matrices defined in vacuum keeps invariant under terrestrial matter effects within the four-neutrino mixing scheme. A set of model-independent sum rules for neutrino masses are obtained, and they can be generalized to hold for an arbitrary number of neutrino families. Useful sum rules for the rephasing-invariant measures of leptonic CP violation have also been found. Finally I present a generic formula of T-violating asymmetries applicable to the future long-baseline neutrino oscillation experiments
Eleven Dimensional Origin of String/String Duality: A One Loop Test

Membrane/fivebrane duality in D=11 implies Type IIA string/Type IIA fivebrane
duality in D=10, which in turn implies Type IIA string/heterotic string duality
in D=6. To test the conjecture, we reproduce the corrections to the 3-form
field equations of the D=10 Type IIA string (a mixture of tree-level and
one-loop effects) starting from the Chern-Simons corrections to the 7-form
Bianchi identities of the D=11 fivebrane (a purely tree-level effect). K3
compactification of the latter then yields the familiar gauge and Lorentz
Chern-Simons corrections to 3-form Bianchi identities of the heterotic string.
We note that the absence of a dilaton in the D=11 theory allows us to fix both
the gravitational constant and the fivebrane tension in terms of the membrane
tension. We also comment on an apparent conflict between fundamental and
solitonic heterotic strings and on the puzzle of a fivebrane origin of
S-duality.Comment: 30 pages (including 5 postscript figures included), LaTeX, Footnote 8
  has been removed; the apparent disagreement with Townsend is only one of
  semantics, not substanc
Anomalous Magnetic Moment of Anyons in three dimensional $CP^{N-1}$
  Model

We calculate the anomalous magnetic moment of anyons in three dimensional
$CP^{N-1}$ model with a Chern-Simons term in various limits in $1/N$ expansion.
We have found that for anyons of infinite mass the gyromagnetic ratio
($g$-factor) is 2 up to the next-to-leading order in $1/N$. Our result supports
a recent claim that the $g$-factor of nonrelativistic anyons is exactly two. We
also found that for $-{8\over\pi }<\theta<0$, the electromagnetic interation
between two identical aynons of large mass are attractive.Comment: 14 pages, LaTex, uses epsf.sty. 3 figures (tarred, gzip compressed,
  and uuencoded postscripts by `uufiles') appended as separate fil
Oscillation of Fourier transform and Markov-Bernstein inequalities

Under certain conditions on an integrable function f having a real-valued
Fourier transform Tf=F, we obtain a certain estimate for the oscillation of F
in the interval [-C||f'||/||f||,C||f'||/||f||] with C>0 an absolute constant.
Given q>0 and an integrable positive definite function f, satisfying some
natural conditions, the above estimate allows us to construct a finite linear
combination P of translates f(x+kq)(with k running the integers) such that
||P'||>c||P||/q, where c>0 is another absolute constant. In particular, our
construction proves sharpness of an inequality of H. N. Mhaskar for Gaussian
networks
Strange Meson Enhancement in PbPb Collisions

The NA44 Collaboration has measured yields and differential distributions of
K+, K-, pi+, pi- in transverse kinetic energy and rapidity, around the
center-of-mass rapidity in 158 A GeV/c Pb+Pb collisions at the CERN SPS. A
considerable enhancement of K+ production per pi is observed, as compared to
p+p collisions at this energy. To illustrate the importance of secondary hadron
rescattering as an enhancement mechanism, we compare strangeness production at
the SPS and AGS with predictions of the transport model RQMD.Comment: 11 pages, including 4 figures, LATE
Predicted cross sections for photon-induced particle emission

Cross sections for the photon-induced particle-emission reactions (gamma,n),
(gamma,p), and (gamma,alpha) are given for all natural isotopes from Ti to Bi.
The target nuclei are assumed to be in their ground states, except for 180Ta
which is naturally occurring as the isomer 180mTa. The cross sections are
calculated in a statistical model (Hauser-Feshbach) approach and covering an
energy range from threshold up to 7.35 MeV above the threshold (14.7 MeV above
threshold for (gamma,alpha) reactions). The results are intended to aid
conception and analysis of experiments which can also be used to test the
methods involved in predicting astrophysical reaction rates for
nucleosynthesis.Comment: 74 pages (including three long tables), accepted for publication in
  Atomic Data Nuclear Data Tables, corrected header of Table
Baryonic Resonances from Baryon Decuplet-Meson Octet Interactions and
  the Exotic Resonance S=1, I=1, J^P=3/2-

Using the lowest order chiral Lagrangian we study s-wave interactions of the
baryon decuplet with the octet of pseudoscalar mesons. We find two bound states
in the flavour SU(3) limit corresponding to the octet and decuplet
representations. These are found to split into eight different trajectories in
the complex plane when the SU(3) symmetry is broken gradually. Finally, we are
able to provide a reasonable description for a good number of 4-star 3/2-
resonances listed by the Particle Data Group. In particular, the Xi(1820), the
Lambda(1520) and the Sigma(1670) states are well reproduced. We predict a few
other resonances and also evaluate the couplings of the observed resonances to
the various channels from the residues at the poles of the scattering matrix
from where partial decay widths into different channels can be evaluated.Comment: Talk given at 10th International Conference on the Structure of
  Baryons (Baryon 2004) at Palaiseau (France), 25-29 October 200
Information, Institutions and, Constitutional Arrangements

This paper develops a theory of optimal institutional structure for staggered-term (overlapping generations) organizations such as legislative bodies. Our model is a simple stochastic game of multi-principal, multi-agent dynamic relationships. Our results emphasize two key features that are determined by legislative founders at the “constitutional moment”. First, they will agree to institute a mechanism that endows (imperfectly informed) legislators with information about the history of play. Second, we provide conditions in which legislative founders will be indifferent to the structure of legislative procedures.Governmen
Ceilings or floors? Gender wage gaps by education in Spain

This paper analyzes the gender gap throughout the wage distribution in Spain using data from the European Community Household Panel. Quantile regression and panel data techniques are used to estimate wage regressions. In contrast with the steep increasing pattern found in other countries, the flatter evolution of the Spanish gender gap hides an intriguing composition effect. For highly educated workers, in line with the conventional glass ceiling hypothesis, the gap increases as we move up the distribution. However, for less-educated workers the gap decreases. We label this novel fact as a floor pattern and argue that it can be explained by statistical discrimination exerted by employers in countries where less-educated women have low participation rates.Publicad
Spitzer as Microlens Parallax Satellite: Mass and Distance Measurements
  of Binary Lens System OGLE-2014-BLG-1050L

We report the first mass and distance measurement of a caustic-crossing
binary system OGLE-2014-BLG-1050L using the space-based microlens parallax
method. \emph{Spitzer} captured the second caustic-crossing of the event, which
occurred $\sim$10 days before that seen from Earth. Due to the coincidence that
the source-lens relative motion was almost parallel to the direction of the
binary-lens axis, the four-fold degeneracy, which was known before only to
occur in single-lens events, persists in this case, leading to either a
lower-mass (0.2 $M_\odot$ and 0.07 $M_\odot$) binary at $\sim$1.1 kpc or a
higher-mass (0.9 $M_\odot$ and 0.35 $M_\odot$) binary at $\sim$3.5 kpc.
However, the latter solution is strongly preferred for reasons including
blending and lensing probability. OGLE-2014-BLG-1050L demonstrates the power of
microlens parallax in probing stellar and substellar binaries.Comment: 29 pages, 8 figures, 4 tables; submitted to Ap
Giant Molecular Clouds in the Early-Type Galaxy NGC4526

We present a high spatial resolution ($\approx 20$ pc) of $^{12}$CO($2-1$)
observations of the lenticular galaxy NGC4526. We identify 103 resolved Giant
Molecular Clouds (GMCs) and measure their properties: size $R$, velocity
dispersion $\sigma_v$, and luminosity $L$. This is the first GMC catalog of an
early-type galaxy. We find that the GMC population in NGC4526 is
gravitationally bound, with a virial parameter $\alpha \sim 1$. The mass
distribution, $dN/dM \propto M^{-2.39 \pm 0.03}$, is steeper than that for GMCs
in the inner Milky Way, but comparable to that found in some late-type
galaxies. We find no size-linewidth correlation for the NGC4526 clouds, in
contradiction to the expectation from Larson's relation. In general, the GMCs
in NGC4526 are more luminous, denser, and have a higher velocity dispersion
than equal size GMCs in the Milky Way and other galaxies in the Local Group.
These may be due to higher interstellar radiation field than in the Milky Way
disk and weaker external pressure than in the Galactic center. In addition, a
kinematic measurement of cloud rotation shows that the rotation is driven by
the galactic shear. For the vast majority of the clouds, the rotational energy
is less than the turbulent and gravitational energy, while the four innermost
clouds are unbound and will likely be torn apart by the strong shear at the
galactic center. We combine our data with the archival data of other galaxies
to show that the surface density $\Sigma$ of GMCs is not approximately constant
as previously believed, but varies by $\sim 3$ orders of magnitude. We also
show that the size and velocity dispersion of GMC population across galaxies
are related to the surface density, as expected from the gravitational and
pressure equilibrium, i.e. $\sigma_v R^{-1/2} \propto \Sigma^{1/2}$.Comment: 21 pages, 16 figures. Accepted for publication in the Astrophysical
  Journa
Study of W boson production in pPb collisions at sqrt(s[NN]) = 5.02 TeV

The first study of W boson production in pPb collisions is presented, for
bosons decaying to a muon or electron, and a neutrino. The measurements are
based on a data sample corresponding to an integrated luminosity of 34.6
inverse nanobarns at a nucleon-nucleon centre-of-mass energy of sqrt(s[NN]) =
5.02 TeV, collected by the CMS experiment. The W boson differential cross
sections, lepton charge asymmetry, and forward-backward asymmetries are
measured for leptons of transverse momentum exceeding 25 GeV, and as a function
of the lepton pseudorapidity in the abs(eta[lab]) < 2.4 range. Deviations from
the expectations based on currently available parton distribution functions are
observed, showing the need for including W boson data in nuclear parton
distribution global fits.Comment: Replaced with published version. Added journal reference and DO
Exceptional collections, and the Neron-Severi lattice for surfaces

We work out properties of smooth projective varieties over a (not necessarily
algebraically closed) field that admit collections of objects in the bounded
derived category of coherent sheaves that are either full exceptional, or
numerically exceptional of maximal length. Our main result gives a necessary
and sufficient condition on the Neron-Severi lattice for a smooth projective
surface with holomorphic Euler characteristic 1 to admit a numerically
exceptional collection of maximal length, consisting of line-bundles. As a
consequence we determine exactly which complex surfaces with vanishing
irregularity and geometric genus admit a numerically exceptional collection of
maximal length. Another consequence is that a minimal geometrically rational
surface with a numerically exceptional collection of maximal length is
rational.Comment: 27 pages; fills a gap in the proof of the main theorem. The relevant
  linear algebra has been moved to an appendi
Fischer Decomposition for osp(4|2)-monogenics in Quaternion Clifford
  Analysis

Spaces of spinor-valued homogeneous polynomials, and in particular spaces of
spinor-valued spherical harmonics, are decomposed in terms of irreducible
representations of the symplectic group Sp$( p)$. These Fischer decompositions
involve spaces of homogeneous, so-called $\mathfrak{osp}(4|2)$-monogenic
polynomials, the Lie superalgebra $\mathfrak{osp}(4|2)$ being the Howe dual
partner to the symplectic group Sp$( p)$. In order to obtain Sp$(
p)$-irreducibility this new concept of $\mathfrak{osp}(4|2)$-monogenicity has
to be introduced as a refinement of quaternionic monogenicity; it is defined by
means of the four quaternionic Dirac operators, a scalar Euler operator
$\mathbb{E}$ underlying the notion of symplectic harmonicity and a
multiplicative Clifford algebra operator $P$ underlying the decomposition of
spinor space into symplectic cells. These operators $\mathbb{E}$ and $P$, and
their hermitian conjugates, arise naturally when constructing the Howe dual
pair $\mathfrak{osp}(4|2) \times$ Sp$( p)$, the action of which will make the
Fischer decomposition multiplicityfree.Comment: arXiv admin note: text overlap with arXiv:1501.0344
Call Graph Profiling for Multi Agent Systems

The design, implementation and testing of Multi Agent Systems is typically a
very complex task. While a number of specialist agent programming languages and
toolkits have been created to aid in the development of such systems, the
provision of associated development tools still lags behind those available for
other programming paradigms. This includes tools such as debuggers and
profilers to help analyse system behaviour, performance and efficiency.
AgentSpotter is a profiling tool designed specifically to operate on the
concepts of agent-oriented programming. This paper extends previous work on
AgentSpotter by discussing its Call Graph View, which presents system
performance information, with reference to the communication between the agents
in the system. This is aimed at aiding developers in examining the effect that
agent communication has on the processing requirements of the system
$\eta$ and $\lambda$ deformations as ${\cal E}$-models

We show that the so called $\lambda$ deformed $\sigma$-model as well as the
$\eta$ deformed one belong to a class of the ${\cal E}$-models introduced in
the context of the Poisson-Lie-T-duality. The $\lambda$ and $\eta$ theories
differ solely by the choice of the Drinfeld double; for the $\lambda$ model the
double is the direct product $G\times G$ while for the $\eta$ model it is the
complexified group $G^{\mathbb{C}}$. As a consequence of this picture, we prove
for any $G$ that the target space geometries of the $\lambda$-model and of the
Poisson-Lie T-dual of the $\eta$-model are related by a simple analytic
continuation.Comment: 20 pages, final version accepted for publication in Nuclear Physics
Massless renormalization group flow in SU(N)$_k$ perturbed conformal
  field theory

We investigate the infrared properties of SU(N)$_k$ conformal field theory
perturbed by its adjoint primary field in 1+1 dimensions. The latter field
theory is shown to govern the low-energy properties of various SU(N) spin chain
problems. In particular, using a mapping onto k-leg SU(N) spin ladder, a
massless renormalization group flow to SU(N)$_1$ criticality is predicted when
N and k have no common divisor. The latter result extends the well-known
massless flow between SU(2)$_k$ and SU(2)$_1$ Wess-Zumino-Novikov-Witten
theories when k is odd in connection to the Haldane's conjecture on SU(2)
Heisenberg spin chains. A direct approach is presented in the simplest N=3 and
k=2 case to investigate the existence of this massless flow.Comment: 21 page
The Word Problem for Omega-Terms over the Trotter-Weil Hierarchy

For two given $\omega$-terms $\alpha$ and $\beta$, the word problem for
$\omega$-terms over a variety $\boldsymbol{\mathrm{V}}$ asks whether
$\alpha=\beta$ in all monoids in $\boldsymbol{\mathrm{V}}$. We show that the
word problem for $\omega$-terms over each level of the Trotter-Weil Hierarchy
is decidable. More precisely, for every fixed variety in the Trotter-Weil
Hierarchy, our approach yields an algorithm in nondeterministic logarithmic
space (NL). In addition, we provide deterministic polynomial time algorithms
which are more efficient than straightforward translations of the
NL-algorithms. As an application of our results, we show that separability by
the so-called corners of the Trotter-Weil Hierarchy is witnessed by
$\omega$-terms (this property is also known as $\omega$-reducibility). In
particular, the separation problem for the corners of the Trotter-Weil
Hierarchy is decidable
Nearby supernova host galaxies from the CALIFA Survey : I. Sample, data analysis, and correlation to star-forming regions

We use optical integral field spectroscopy (IFS) of nearby supernova (SN) host galaxies (0.005 < z < 0.03) provided by the Calar Alto Legacy Integral Field Area (CALIFA) Survey with the goal of finding correlations in the environmental parameters at the location of different SN types. In this first study of a series we focus on the properties related with star formation (SF). We recover the sequence in association of different SN types to the star-forming regions by using several indicators of the ongoing and recent SF related to both the ionized gas and the stellar populations. While the total ongoing SF is on average the same for the three SN types, SNe Ibc/IIb tend to occur closer to star-forming regions and in higher SF density locations than SNe II and SNe Ia; the latter shows the weakest correlation. SNe Ia host galaxies have masses that are on average ∼0.3−0.8 dex higher than those of the core collapse (CC) SNe hosts because the SNe Ia hosts contain a larger fraction of old stellar populations. Using the recent SN Ia delay-time distribution and the SFHs of the galaxies, we show that the SN Ia hosts in our sample are expected to produce twice as many SNe Ia as the CC SN hosts. Since both types occur in hosts with a similar SF rate and hence similar CC SN rate, this can explain the mass difference between the SN Ia and CC SN hosts, and reinforces the finding that at least part of the SNe Ia originate from very old progenitors. By comparing the mean SFH of the eight least massive galaxies with that of the massive SF SN Ia hosts, we find that the low-mass galaxies formed their stars during a longer time (0.65%, 24.46%, and 74.89% in the intervals 0–0.42 Gyr, 0.42–2.4 Gyr, and >2.4 Gyr, respectively) than the massive SN Ia hosts (0.04%, 2.01%, and 97.95% in these intervals). We estimate that the low-mass galaxies produce ten times fewer SNe Ia and three times fewer CC SNe than the high-mass group. Therefore the ratio between the number of CC SNe and SNe Ia is expected to increase with decreasing galaxy mass. CC SNe tend to explode at positions with younger stellar populations than the galaxy average, but the galaxy properties at SNe Ia locations are one average the same as the global galaxy properties.Publisher PDFPeer reviewe
Measurement of the inclusive jet cross-section in proton-proton collisions at √s=7 TeV using 4.5 fb−1 of data with the ATLAS detector

The inclusive jet cross-section is measured in proton-proton collisions at a centre-of-mass energy of 7 TeV using a data set corresponding to an integrated luminosity of 4.5 fb−1 collected with the ATLAS detector at the Large Hadron Collider in 2011. Jets are identified using the anti-k t algorithm with radius parameter values of 0.4 and 0.6. The double-differential cross-sections are presented as a function of the jet transverse momentum and the jet rapidity, covering jet transverse momenta from 100 GeV to 2 TeV. Next-to-leading-order QCD calculations corrected for non-perturbative effects and electroweak effects, as well as Monte Carlo simulations with next-to-leading-order matrix elements interfaced to parton showering, are compared to the measured cross-sections. A quantitative comparison of the measured cross-sections to the QCD calculations using several sets of parton distribution functions is performed
Differentiated effect of advertising: Joint vs. separate consumption

In a context of intense competition, cooperative advertising between firms is critical. Accordingly, the objective of this article is to analyze the potential differentiated effect of advertising on two basic consumption patterns: individual products (i.e. hotel, restaurant) vs. bundle (i.e. hotel + restaurant). This research adds to the extant literature in that, for the first time, this potential differentiated effect is examined through a hierarchical modelling framework that reflects the way people make their decisions: first, they decide whether to visit or not a region; second, whether to purchase an advertised product in that region; and third, whether to buy products together or separately at the region. The empirical analysis, applied to a sample of 11,288 individuals, shows that the influence of advertising is positive for the decisions to visit and to purchase; however, when it comes to the joint or separate consumption, advertising has a differentiated effect: its impact is much greater on the joint alternative (“hotel + restaurant”) than the separate options (“hotel” and “restaurant”). Also, the variable distance moderates the advertising effect