pinecone/core-2020-05-10-deduplication huggingface dataset:
Toward the classification of differential calculi on $\kappa$-Minkowski
  space and related field theories

Classification of differential forms on $\kappa$-Minkowski space,
particularly, the classification of all bicovariant differential calculi of
classical dimension is presented. By imposing super-Jacobi identities we derive
all possible differential algebras compatible with the $\kappa$-Minkowski
algebra for time-like, space-like and light-like deformations. Embedding into
the super-Heisenberg algebra is constructed using non-commutative (NC)
coordinates and one-forms. Particularly, a class of differential calculi with
an undeformed exterior derivative and one-forms is considered. Corresponding NC
differential calculi are elaborated. Related class of new Drinfeld twists is
proposed. It contains twist leading to $\kappa$-Poincar\'e Hopf algebra for
light-like deformation. Corresponding super-algebra and deformed super-Hopf
algebras, as well as the symmetries of differential algebras are presented and
elaborated. Using the NC differential calculus, we analyze NC field theory,
modified dispersion relations, and discuss further physical applications.Comment: 37 pages, major revision, new section added, accepted for publication
  in JHE
A search for high-mass resonances decaying to $\tau^{+}\tau^{-}$ in $pp$
  collisions at $\sqrt{s}=8$ TeV with the ATLAS detector

A search for high-mass resonances decaying into $\tau^{+}\tau^{-}$ final
states using proton-proton collisions at $\sqrt{s}= 8$ TeV produced by the
Large Hadron Collider is presented. The data were recorded with the ATLAS
detector and correspond to an integrated luminosity of 19.5-20.3 fb$^{-1}$. No
statistically significant excess above the Standard Model expectation is
observed; 95% credibility upper limits are set on the cross section times
branching fraction of $Z^{\prime}$ resonances decaying into $\tau^+\tau^-$
pairs as a function of the resonance mass. As a result, $Z^{\prime}$ bosons of
the Sequential Standard Model with masses less than 2.02 TeV are excluded at
95% credibility. The impact of the fermionic couplings on the $Z^{\prime}$
acceptance is investigated and limits are also placed on a $Z^{\prime}$ model
that exhibits enhanced couplings to third-generation fermions.Comment: 26 pages plus author list + cover page (50 pages total), 9 figures, 4
  tables, submitted to JHEP, All figures including auxiliary figures are
  available at
  http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2014-05
Planck 2015 results. XI. CMB power spectra, likelihoods, and robustness
  of parameters

This paper presents the Planck 2015 likelihoods, statistical descriptions of
the 2-point correlations of CMB data, using the hybrid approach employed
previously: pixel-based at $\ell<30$ and a Gaussian approximation to the
distribution of spectra at higher $\ell$. The main improvements are the use of
more and better processed data and of Planck polarization data, and more
detailed foreground and instrumental models, allowing further checks and
enhanced immunity to systematics. Progress in foreground modelling enables a
larger sky fraction. Improvements in processing and instrumental models further
reduce uncertainties. For temperature, we perform an analysis of end-to-end
instrumental simulations fed into the data processing pipeline; this does not
reveal biases from residual instrumental systematics. The $\Lambda$CDM
cosmological model continues to offer a very good fit to Planck data. The slope
of primordial scalar fluctuations, $n_s$, is confirmed smaller than unity at
more than 5{\sigma} from Planck alone. We further validate robustness against
specific extensions to the baseline cosmology. E.g., the effective number of
neutrino species remains compatible with the canonical value of 3.046. This
first detailed analysis of Planck polarization concentrates on E modes. At low
$\ell$ we use temperature at all frequencies and a subset of polarization. The
frequency range improves CMB-foreground separation. Within the baseline model
this requires a reionization optical depth $\tau=0.078\pm0.019$, significantly
lower than without high-frequency data for explicit dust monitoring. At high
$\ell$ we detect residual errors in E, typically O($\mu$K$^2$); we recommend
temperature alone as the high-$\ell$ baseline. Nevertheless, Planck high-$\ell$
polarization allows a separate determination of $\Lambda$CDM parameters
consistent with those from temperature alone.Comment: This paper is associated with the 2015 Planck release (see
  http://www.cosmos.esa.int/web/planck/publications). Likelihood code & data
  available at http://www.cosmos.esa.int/web/planck/pla. Version accepted by
  A&A. Substancially extended (104 pages) with analysis of end-to-simulations
  of systematics further confirming the results. Abstract abridge
$\bar{D}\Sigma^*_c$ and $\bar{D}^*\Sigma_c$ interactions and the LHCb
  hidden-charmed pentaquarks

Very recently, two hidden-charmed resonances $P_c(4380)$ and $P_c(4450)$
consistent with pentaquark states were observed at the LHCb detector. The two
$P_c$ states locate just below the $\bar{D}\Sigma^*_c$ and $\bar{D}^*\Sigma_c$
thresholds with mass of gaps about 5 and 15 MeV, respectively. Inspired by this
fact we perform a dynamical investigation about the $\bar{D}\Sigma_c^*(2520)$
and $\bar{D}^*\Sigma_c(2455)$ interactions which are described by the meson
exchanges. A bound state which carries spin-parity $J^P=3/2^-$ is produced from
the $\bar{D}\Sigma^*_c(2520)$ interaction, which is consistent with the
$P_c(4380)$ observed at the LHCb detector. From the $D^*\Sigma_c(2455)$
interaction, a bound state with $5/2^+$ is produced, which can be related to
the $P_c(4450)$. The results suggest that the $P_c(4380)$ and $P_c(4450)$ are
good candidates of $\bar{D}\Sigma_c^*(2520)$ and $\bar{D}^*\Sigma_c(2455)$
molecular states, respectively.Comment: 5 pages, 3 figures, published version in Phys. Lett.
Seasonal Variability of Saturn's Tropospheric Temperatures, Winds and
  Para-H$_2$ from Cassini Far-IR Spectroscopy

Far-IR 16-1000 $\mu$m spectra of Saturn's hydrogen-helium continuum measured
by Cassini's Composite Infrared Spectrometer (CIRS) are inverted to construct a
near-continuous record of upper tropospheric (70-700 mbar) temperatures and
para-H$_2$ fraction as a function of latitude, pressure and time for a third of
a Saturnian year (2004-2014, from northern winter to northern spring). The
thermal field reveals evidence of reversing summertime asymmetries superimposed
onto the belt/zone structure. The temperature structure that is almost
symmetric about the equator by 2014, with seasonal lag times that increase with
depth and are qualitatively consistent with radiative climate models. Localised
heating of the tropospheric hazes (100-250 mbar) create a distinct perturbation
to the temperature profile that shifts in magnitude and location, declining in
the autumn hemisphere and growing in the spring. Changes in the para-H$_2$
($f_p$) distribution are subtle, with a 0.02-0.03 rise over the spring
hemisphere (200-500 mbar) perturbed by (i) low-$f_p$ air advected by both the
springtime storm of 2010 and equatorial upwelling; and (ii) subsidence of
high-$f_p$ air at northern high latitudes, responsible for a developing
north-south asymmetry in $f_p$. Conversely, the shifting asymmetry in the
para-H$_2$ disequilibrium primarily reflects the changing temperature structure
(and the equilibrium distribution of $f_p$), rather than actual changes in
$f_p$ induced by chemical conversion or transport. CIRS results interpolated to
the same point in the seasonal cycle as re-analysed Voyager-1 observations show
qualitative consistency, with the exception of the tropical tropopause near the
equatorial zones and belts, where downward propagation of a cool temperature
anomaly associated with Saturn's stratospheric oscillation could potentially
perturb tropopause temperatures, para-H$_2$ and winds. [ABRIDGED]Comment: Preprint accepted for publication in Icarus, 29 pages, 18 figure
On Fourier series of a discrete Jacobi-Sobolev inner product

22 pages, no figures.-- MSC2000 code: 42C05.MR#: MR1920116 (2003e:42007)Zbl#: Zbl 1019.42014Let $\mu$ be the Jacobi measure supported on the interval $[-1,1]$ and introduce the discrete Sobolev-type inner product $$\langle f,g\rangle= \int _{-1} f(x) g(x) d\mu(x)+ \sum _{k=1} \sum N_k}_{i=0} M_{k,i} f (i)}(a_k) g (i)}(a_k),$$ where $a_k$, $1\le k\le K$, are real numbers such that $ _k 1$ and $M_{k,i}> 0$ for all $k$, $i$. This paper is a continuation of [{\it F. Marcellán}, {\it B. P. Osilenker} and {\it I. A. Rocha}, "On Fourier series of Jacobi-Sobolev orthogonal polynomials", J. Inequal. Appl. 7, 673-699 (2002; Zbl 1016.42014)] and our main purpose is to study the behaviour of the Fourier series associated with such a Sobolev inner product. For an appropriate function $f$, we prove here that the Fourier-Sobolev series converges to $f$ on $(-1,1)\bigcup _{k=1}\{a_k\}$, and the derivatives of the series converge to $f (i)}(a_k)$ for all $i$ and $k$. Roughly speaking, the term appropriate means here the same as we need for a function $f$ in order to have convergence for its Fourier series associated with the standard inner product given by the measure $\mu$. No additional conditions are needed.The work of F. Marcellán was supported by a grant of Dirección General de Investigación (Ministerio de Ciencia y Tecnología) of Spain BFM 2000 0206 C04 01 and by an INTAS Grant 2000/272.Publicad
On residual finiteness of monoids, their Schützenberger groups and associated actions

RG was supported by an EPSRC Postdoctoral Fellowship EP/E043194/1 held at the University of St Andrews, Scotland.In this paper we discuss connections between the following properties: (RFM) residual finiteness of a monoid M ; (RFSG) residual finiteness of Schützenberger groups of M ; and (RFRL) residual finiteness of the natural actions of M on its Green's R- and L-classes. The general question is whether (RFM) implies (RFSG) and/or (RFRL), and vice versa. We consider these questions in all the possible combinations of the following situations: M is an arbitrary monoid; M is an arbitrary regular monoid; every J-class of M has finitely many R- and L-classes; M has finitely many left and right ideals. In each case we obtain complete answers, which are summarised in a table.PostprintPeer reviewe
Activity and magnetic field structure of the Sun-like planet-hosting star HD 1237

Date of Acceptance: 13/07/2015We analyse the magnetic activity characteristics of the planet-hosting Sun-like star, HD 1237, using HARPS spectro-polarimetric time-series data. We find evidence of rotational modulation of the magnetic longitudinal field measurements that is consistent with our ZDI analysis with a period of 7 days. We investigate the effect of customising the LSD mask to the line depths of the observed spectrum and find that it has a minimal effect on the shape of the extracted Stokes V profile but does result in a small increase in the S/N (~7%). We find that using a Milne-Eddington solution to describe the local line profile provides a better fit to the LSD profiles in this slowly rotating star, which also affects the recovered ZDI field distribution. We also introduce a fit-stopping criterion based on the information content (entropy) of the ZDI map solution set. The recovered magnetic field maps show a strong (+90 G) ring-like azimuthal field distribution and a complex radial field dominating at mid latitudes (~45 degrees). Similar magnetic field maps are recovered from data acquired five months apart. Future work will investigate how this surface magnetic field distribution affects the coronal magnetic field and extended environment around this planet-hosting star.Publisher PDFPeer reviewe
Transiting the Sun : the impact of stellar activity on X-ray and ultraviolet transits

This work is supported by NASA Origins of the Solar System grant No. NNX13AH79G.Transits of hot Jupiters in X-rays and the ultraviolet have been shown to be both deeper and more variable than the corresponding optical transits. This variability has been attributed to hot Jupiters having extended atmospheres at these wavelengths. Using resolved images of the Sun from NASA’s Solar Dynamics Observatory spanning 3.5 yr of Solar Cycle 24 we simulate transit light curves of a hot Jupiter to investigate the impact of Solar-like activity on our ability to reliably recover properties of the planet’s atmosphere in soft X-rays (94 Å), the UV (131-1700 Å), and the optical (4500 Å). We find that for stars with activity levels similar to those of the Sun, the impact of stellar activity results in underestimating the derived radius of the planet in soft X-ray/EUV by up-to 25% or overestimating it by up to 50% depending on whether the planet occultsactive regions. We also find that in up to 70% of the X-ray light curves the planet transits over bright starspots. In the far-ultraviolet (1600 Å and 1700 Å), we find the mean recovered value of Rp/R* to be over-estimated by up to 20%. For optical transits we are able to consistently recover the correct planetary radius. We also address the implications of our results for transits of WASP-12 b and HD 189733b at short wavelengths.Publisher PDFPeer reviewe
Variation of the detergent-binding capacity and phospholipid content of membrane proteins when purified in different detergents.

Purified membrane proteins are ternary complexes consisting of protein, lipid, and detergent. Information about the amounts of detergent and endogenous phospholipid molecules bound to purified membrane proteins is largely lacking. In this systematic study, three model membrane proteins of different oligomeric states were purified in nine different detergents at commonly used concentrations and characterized biochemically and biophysically. Detergent-binding capacities and phospholipid contents of the model proteins were determined and compared. The insights on ternary complexes obtained from the experimental results, when put into a general context, are summarized as follows. 1), The amount of detergent and 2) the amount of endogenous phospholipids bound to purified membrane proteins are dependent on the size of the hydrophobic lipid-accessible protein surface areas and the physicochemical properties of the detergents used. 3), The size of the detergent and lipid belt surrounding the hydrophobic lipid-accessible surface of purified membrane proteins can be tuned by the appropriate choice of detergent. 4), The detergents n-nonyl-β-D-glucopyranoside and Cymal-5 have exceptional delipidating effects on ternary complexes. 5), The types of endogenous phospholipids bound to membrane proteins can vary depending on the detergent used for solubilization and purification. 6), Furthermore, we demonstrate that size-exclusion chromatography can be a suitable method for estimating the molecular mass of ternary complexes. The findings presented suggest a strategy to control and tune the numbers of detergent and endogenous phospholipid molecules bound to membrane proteins. These two parameters are potentially important for the successul crystallization of membrane proteins for structure determination by crystallographic approaches
Spinning strings in AdS_(3) × S^(3) with NS–NS flux

The sigma model describing closed strings rotating in AdS_(3) × S^(3) is known to reduce to the one-dimensional Neumann–Rosochatius integrable system. In this article we show that closed spinning strings in AdS_(3) × S^(3) × T ^(4) in the presence of NS–NS three-form flux can be described by an extension of the Neumann–Rosochatius system. We consider closed strings rotating with one spin in AdS_(3) and two different angular momenta in S^(3). For a class of solutions with constant radii we find the dependence of the classical energy on the spin and the angular momenta as an expansion in the square of the ’t Hooft coupling of the theory
Developing an inverted Barrovian sequence : insights from monazite petrochronology

In the Himalayan region of Sikkim, the well-developed inverted metamorphic sequence of the Main Central Thrust (MCT) zone is folded, thus exposing several transects through the structure that reached similar metamorphic grades at different times. In-situ LA-ICP-MS U–Th–Pb monazite ages, linked to pressure–temperature conditions via trace-element reaction fingerprints, allow key aspects of the evolution of the thrust zone to be understood for the first time. The ages show that peak metamorphic conditions were reached earliest in the structurally highest part of the inverted metamorphic sequence, in the Greater Himalayan Sequence (GHS) in the hanging wall of the MCT. Monazite in this unit grew over a prolonged period between ∼37 and 16 Ma in the southerly leading-edge of the thrust zone and between ∼37 and 14.5 Ma in the northern rear-edge of the thrust zone, at peak metamorphic conditions of ∼790 °C and 10 kbar. Monazite ages in Lesser Himalayan Sequence (LHS) footwall rocks show that identical metamorphic conditions were reached ∼4–6 Ma apart along the ∼60 km separating samples along the MCT transport direction. Upper LHS footwall rocks reached peak metamorphic conditions of ∼655 °C and 9 kbar between ∼21 and 16 Ma in the more southerly-exposed transect and ∼14.5–12 Ma in the northern transect. Similarly, lower LHS footwall rocks reached peak metamorphic conditions of ∼580 °C and 8.5 kbar at ∼16 Ma in the south, and 9–10 Ma in the north. In the southern transect, the timing of partial melting in the GHS hanging wall (∼23–19.5 Ma) overlaps with the timing of prograde metamorphism (∼21 Ma) in the LHS footwall, confirming that the hanging wall may have provided the heat necessary for the metamorphism of the footwall.\ud
\ud
Overall, the data provide robust evidence for progressively downwards-penetrating deformation and accretion of original LHS footwall material to the GHS hanging wall over a period of ∼5 Ma. These processes appear to have occurred several times during the prolonged ductile evolution of the thrust. The preserved inverted metamorphic sequence therefore documents the formation of sequential ‘paleo-thrusts’ through time, cutting down from the original locus of MCT movement at the LHS–GHS protolith boundary and forming at successively lower pressure and temperature conditions. The petrochronologic methods applied here constrain a complex temporal and thermal deformation history, and demonstrate that inverted metamorphic sequences can preserve a rich record of the duration of progressive ductile thrusting.\u
J/ψ production as a function of charged particle multiplicity in pp collisions at √s = 7 TeV

The ALICE Collaboration reports the measurement of the relative J/ψ yield as a function of charged particle pseudorapidity density dNch/dη in pp collisions at √s = 7 TeV at the LHC. J/ψ particles are detected for pt > 0, in the rapidity interval |y| < 0.9 via decay into e+e−, and in the interval 2.5 < y < 4.0 via decay into μ+μ− pairs. An approximately linear increase of the J/ψ yields normalized to their event average (dNJ/ψ /dy)/�dNJ/ψ /dy� with (dNch/dη)/�dNch/dη� is observed in both rapidity ranges, where dNch/dη is measured within |η| < 1 and pt > 0. In the highest multiplicity interval with �dNch/dη(bin)� = 24.1, corresponding to four times the minimum bias multiplicity density, an enhancement relative to the minimum bias J/ψ yield by a factor of about 5 at 2.5 < y < 4 (8 at |y| < 0.9) is observed
Quantum Kerr tunneling vacua on a (DD⎯⎯⎯)4 -brane: An emergent Kerr black hole in five dimensions

A non-perturbation formalism underlying a quantum theory of gravity is revisited by exploiting a two form in a non-linear U(1) gauge theory on a D4 -brane. In particular, we explore two different gauge choices for a two form underlying the dynamics of a higher dimensional geometric torsion in a second order formalism. We obtain two non-extremal quantum Kerr geometries in five dimensions on a pair of (DD⎯⎯⎯)4 -brane in a type IIA superstring theory. In the gauge choice, the quantum vacua may seen to underlie a non-propagating torsion on a non-BPS brane. It is argued that the quantum Kerr vacua undergo tunneling and lead to a five dimensional Einstein Kerr black hole in a low energy limit
A very intense neutrino super beam experiment for leptonic CP violation discovery based on the European spallation source linac

Very intense neutrino beams and large neutrino detectors will be needed in order to enable the discovery of CP violation in the leptonic sector. We propose to use the proton linac of the European Spallation Source currently under construction in Lund, Sweden, to deliver, in parallel with the spallation neutron production, a very intense, cost effective and high performance neutrino beam. The baseline program for the European Spallation Source linac is that it will be fully operational at 5 MW average power by 2022, producing 2 GeV 2.86 ms long proton pulses at a rate of 14 Hz. Our proposal is to upgrade the linac to 10 MW average power and 28 Hz, producing 14 pulses/s for neutron production and 14 pulses/s for neutrino production. Furthermore, because of the high current required in the pulsed neutrino horn, the length of the pulses used for neutrino production needs to be compressed to a few μs with the aid of an accumulator ring. A long baseline experiment using this Super Beam and a megaton underground Water Cherenkov detector located in existing mines 300–600 km from Lund will make it possible to discover leptonic CP violation at 5 σ significance level in up to 50% of the leptonic Dirac CP-violating phase range. This experiment could also determine the neutrino mass hierarchy at a significance level of more than 3 σ if this issue will not already have been settled by other experiments by then. The mass hierarchy performance could be increased by combining the neutrino beam results with those obtained from atmospheric neutrinos detected by the same large volume detector. This detector will also be used to measure the proton lifetime, detect cosmological neutrinos and neutrinos from supernova explosions. Results on the sensitivity to leptonic CP violation and the neutrino mass hierarchy are presented