pinecone/core-2020-05-10-deduplication huggingface dataset:
Mapping Dirac gaugino masses

We investigate the mapping of Dirac gaugino masses through regions of strong
coupling, focussing on SQCD with an adjoint. These models have a well-known
Kutasov duality, under which a weakly coupled electric UV description can flow
to a different weakly coupled magnetic IR description. We provide evidence to
show that Dirac gaugino mass terms map as lim_{mu->infty} mD/(g kappa^{1/(k+1}}
= lim_{mu->0} tilde{mD}/(tilde{g} tilde{kappa}^{1/(k+1}} under such a flow,
where the coupling kappa appears in the superpotential of the canonically
normalised theory as W \supset kappa X^{k+1}. This combination is an
RG-invariant to all orders in perturbation theory, but establishing the mapping
in its entirety is not straightforward because Dirac masses are not the
spurions of holomorphic couplings in the N=1 theory. To circumvent this, we
first demonstrate that deforming the Kutasov theory can make it flow to an N=2
theory with parametrically small N=1 deformations. Using harmonic superspace
techniques we then show that the N=1 deformations can be recovered from
electric and magnetic FI-terms that break N=2 -> N=1, and also show that pure
Dirac mass terms can be induced by the same mechanism. We then find that the
proposed RG-invariant is indeed preserved under N=2 duality, and thence along
the flow to the dual N=1 Kutasov theories. Possible phenomenological
applications are discussed.Comment: 39 pages, 5 figures. Version accepted to JHE
Logarithmic two-Point Correlation Functions from a z = 2 Lifshitz Model

The Einstein-Proca action is known to have asymptotically locally Lifshitz
spacetimes as classical solutions. For dynamical exponent z=2, two-point
correlation functions for fluctuations around such a geometry are derived
analytically. It is found that the retarded correlators are stable in the sense
that all quasinormal modes are situated in the lower half-plane of complex
frequencies. Correlators in the longitudinal channel exhibit features that are
reminiscent of a structure usually obtained in field theories that are
logarithmic, i.e. contain an indecomposable highest weight representation. This
suggests the model at hand as a candidate for a gravity dual of a logarithmic
field theory with anisotropic scaling symmetry.Comment: 31 pages, 2 figure
Sphere-level Ramond-Ramond couplings in Ramond-Neveu-Schwarz formalism

We calculate in details the sphere-level scattering amplitude of two
Ramond-Ramond (RR) and two Neveu-Schwarz-Neveu-Schwarz (NSNS) vertex operators
in type II superstring theories in Ramond-Neveu-Schwarz (RNS) formalism. We
then compare the expansion of this amplitude at order $\alpha'^3$ with the
eight-derivative couplings of the gravity and B-field that have been recently
found based on S-dual and T-dual Ward identities. We find exact agreement.
Moreover, using the above S-matrix element, we have found various couplings
involving the dilaton field, and shown that they are also fully consistent with
these Ward identities.Comment: 34 pages, Latex file, no figure; v3: the version appears in np
On Geometric Scaling of Light-Like Wilson Polygons: Higher Orders in
  $\alpha_s$

We address the scaling behaviour of contour-shape-dependent ultra-violet
singularities of the light-like cusped Wilson loops in Yang-Mills and ${\cal N}
= 4$ super-Yang-Mills theories in the higher orders of the perturbative
expansion. We give the simple arguments to support the idea that identifying of
a special type of non-local infinitesimal shape variations of the light-like
Wilson polygons with the Fr\'echet differentials results in the combined
geometric and renormalization-group evolution equation, which is applicable
beyond the leading order exponentiated Wilson loops.Comment: 8 pages, 2 figure
BICEP2, non Bunch-Davies and Entanglement

BICEP2 result on the tensor to scalar ratio $r$ indicates a blue tilt in the
primordial gravitational wave spectrum. This blue tilt and the observed large
value $r = 0.2$ are difficult to accommodate within the single field
inflationary scenarios under standard conditions. Non Bunch-Davies vacuum
states have been proposed as a possibility. Such vacuua are known to lead to
pathologies. In this note we propose to interpret them as excited/squeezed
states built over the standard Bunch-Davies vacuum and discuss the associated
entanglement properties due to de Sitter horizon, and how such an approach may
be more natural in the context of inflation.Comment: 5 page
Intersecting Brane Worlds on Tori and Orbifolds

We review the construction and phenomenology of intersecting brane worlds.
The breaking of chiral and supersymmetry together with a reduction of gauge
symmetry by introducing D-branes at generic angles into type I or type II
string compactifications is taken as a starting point for the engineering of
phenomenologically appealing four-dimensional vacua. Examples that come very
close to Standard Model and GUT physics are considered and issues like the
cancellation of anomalies and the emergence of global symmetries studied in
some detail. Concerning the gravitational backreaction, the perturbative
potential generated at the disc level is shown to lead to a run-away
instability of geometric moduli within the purely toroidal compactifications.
It can at least partly be avoided in certain orbifold vacua, where the relevant
moduli are frozen. These more restricted models still possess sufficient
freedom to find semi-realistic brane world orbifolds.Comment: 8 pages, 3 figures, contribution to the proceedings of the RTN
  network workshop `The quantum structure of spacetime and the geometric nature
  of fundamental interactions' at Corfu, Greece, 13.-20.09.0
Defining < A^2 > in the finite volume hamiltonian formalism

It is shown how in principle for non-abelian gauge theories it is possible in
the finite volume hamiltonian framework to make sense of calculating the
expectation value of ||A||^2=\int d^3x(A^a_i(x))^2. Gauge invariance requires
one to replace ||A||^2 by its minimum over the gauge orbit, which makes it a
highly non-local quantity. We comment on the difficulty of finding a gauge
invariant expression for ||A||^2_{min} analogous to that found for the abelian
case, and the relation of this question to Gribov copies. We deal with these
issues by implementing the hamiltonian on the so-called fundamental domain,
with appropriate boundary conditions in field space, essential to correctly
represent the physics of the problem.Comment: 13 pages, 2 figures (in 3 parts). Amended references. Modified
  introduction. Version accepted for publicatio
Prospects of "Topologically Unquenched QCD" from a study of the analogous importance sampling method in the massive Schwinger model

I give a quick summary of my proposal for simulating an improvement on quenched QCD with dynamical fermions which interact with the gluon configuration only via the topological index of the latter. It amounts to include only the topological part of the functional determinant into the measure, thereby absorbing a correction factor into the observable. I discuss the prospects of this concept from a study in the massive $N_f$-flavour Schwinger model, where the correction factor is indeed found to be of order $O(1)$
Neutral Higgs Sector of the MSSM without $R_{p}$

We analyse the neutral scalar sector of the MSSM without R-parity. Our analysis is performed for a one-generation model in terms of ``basis-independent'' parameters, and includes one-loop corrections due to large yukawa couplings. We concentrate on the consequences of large $R_p$ violating masses in the soft sector, which mix the Higgses with the sleptons, because these are only constrained by their one-loop contributions to neutrino masses. We focus on the effect of $R_p$-violation on the Higgs mass and branching ratios. We find that the experimental lower bound on the lightest CP-even Higgs in this model can be lower than in the MSSM
Monopoles in Space-Time Noncommutative Born-Infeld theory

We transform static solutions of space-noncommutative Dirac-Born-Infeld theory (DBI) into static solutions of space-time noncommutative DBI. Via Seiberg-Witten map we match this symmetry transformation with a corresponding symmetry of commutative DBI. This allows to: 1) study new BPS type magnetic monopoles, with constant electric and magnetic background and describe them both in the commutative and in the noncommutative setting; 2) relate by S-duality space-noncommutative magnetic monopoles to space-noncommutative electric monopole
A numerical study of the RG equation for the deformed $O(3)$ nonlinear
  sigma model

The Renormalization Group equation describing the evolution of the metric of
the nonlinear sigma model poses some nice mathematical problems involving
functional analysis, differential geometry and numerical analysis. In this
article we briefly report some results obtained from the numerical study of the
solutions in the case of a two dimensional target space (deformation of the
$O(3)$ sigma model). In particular, our analysis shows that the so-called
sausages define an attracting manifold in the $U(1)$-symmetric case, at
one-loop level. Moreover, data from two-loop evolution are used to test the
association put forward in Nucl. Phys., B406 (1993) 521 between the so-called
$SSM_{\nu}$ field theory and a certain $U(1)$-symmetric, factorized scattering
theory (FST).Comment: LaTex (RevTex style), 16 pages, 6 uuencoded figures. Minor technical
  changes
Effective interactions of a light gravitino

We review some recent results on the effective interactions of a light
gravitino with ordinary particles. In particular, we discuss on a simple
example a novel aspect of the low-energy theorems for broken supersymmetry: in
the effective lagrangian describing the goldstino couplings to matter, there
are terms bilinear in the goldstino that, already at the lowest non-trivial
order, are not entirely controlled by the supersymmetry-breaking scale, and
introduce additional free parameters. We conclude by mentioning some
phenomenological implications, including a lower bound on the gravitino mass
from collider data.Comment: 6 A4 pages, no figures, plain LATEX. Talk at the Workshop `Quantum
  Aspects of Gauge Theories, Supersymmetry and Unification' (Neuch\^atel
  University, Neuch\^atel, Switzerland, 18-23 September 1997), to appear in the
  Proceedings. Typos corrected, references update
The structure relation for Askey-Wilson polynomials

An explicit structure relation for Askey-Wilson polynomials is given. This
involves a divided q-difference operator which is skew symmetric with respect
to the Askey-Wilson inner product and which sends polynomials of degree n to
polynomials of degree n+1. By specialization of parameters and by taking
limits, similar structure relations, as well as lowering and raising relations,
can be obtained for other families in the q-Askey scheme and the Askey scheme.
This is explicitly discussed for Jacobi polynomials, continuous q-Jacobi
polynomials, continuous q-ultraspherical polynomials, and for big q-Jacobi
polynomials. An already known structure relation for this last family can be
obtained from the new structure relation by using the three-term recurence
relation and the second order q-difference formula. The results are also put in
the framework of a more general theory. Their relationship with earlier work by
Zhedanov and Bangerezako is discussed. There is also a connection with the
string equation in discrete matrix models and with the Sklyanin algebra.Comment: 18 pages, minor corrections and updated reference
Universality of Decay out of Superdeformed Bands in the 190 Mass Region

Superdeformed nuclei in the 190 mass region exhibit a striking universality
in their decay-out profiles. We show that this universality can be explained in
the two-level model of superdeformed decay as related to a strong separation of
energy scales: a higher scale related to the nuclear interactions, and a lower
scale caused by electromagnetic decay. Furthermore, we present the results of
the two-level model for all decays for which sufficient data are known,
including statistical extraction of the matrix element for tunneling through
the potential barrier.Comment: 7 pages, 3 figures. v2: some minor clarifications, minor correction
  to Fig.
Dominance of Nuclear Processes in the Dissociation of 8B

We study the break-up of 8B in collisions with heavy-ions. The process is
described in terms of inelastic excitations leading to states in the continuum.
  The effects of the nuclear and coulomb fields are included on the same
footing in the microscopic construction of the transition matrix elements. The
interplay between coulomb and nuclear excitation processes differs
significantly from the situation encountered in reactions involving systems
close to the stability line. In particular, nuclear excitation is found to
remain predominant at energies well below the coulomb barrier,Comment: TEX file + 11 postscript figure
4D Tropospheric Tomography using GPS Estimated Slant Delays

Tomographic techniques are successfully applied to obtain 4D images of the
tropospheric refractivity in a local dense network. In the lower atmosphere
both the small height and time scales and the non-dispersive nature of
tropospheric delays require a more careful analysis of the data. We show how
GPS data is processed to obtain the tropospheric slant delays using the
GIPSY-OASIS II software and define the concept of pseudo-wet delays, which will
be the observables in the tomographic software. We then discuss the inverse
problem in the 3D stochastic tomography, using simulated refractivity fields to
test the system and the impact of noise. Finally, we use data from the Kilauea
network in Hawaii and a local 4x4x41-voxel grid on a region of 400 Km$^2$ and
15 Km in height to produce 4D refractivity fields. Results are compared with
ECMWF forecast.Comment: 9 pages, 6 figures (2 color
Error sensitivity of a Quantum Simulator I: a first example

As the first useful Quantum Computers will be quantum simulators, here the
minimum number of qubits necessary for the solution of the Schroedinger
equation in simple test problems is evaluated. From the present preliminary
results it appears that it is possible to realize a useful quantum simulator
with a register of only 10-15 qbits. The intrinsic sensitivity to some errors
appears to be moderate without the need of error correcting methods. At present
there is at least some indication that the amplitude errors are more dangerous
than phase and decoherence errors. So corrections limited to amplitude errors
may be very useful.Comment: 10 pages, 6 figure
Loss of the Lupus Autoantigen Ro52/Trim21 Induces Tissue Inflammation and Systemic Autoimmunity by Disregulating the IL-23–Th17 Pathway

Ro52/Trim21 is targeted as an autoantigen in systemic lupus erythematosus and Sjögren's syndrome. Polymorphisms in the Ro52 gene have been linked to these autoimmune conditions, but the molecular mechanism by which Ro52 may promote development of systemic autoimmune diseases has not been explored. To address this issue, we generated Ro52-null mice (\(Ro52^{−/−}\)), which appear phenotypically normal if left unmanipulated. However, \(Ro52^{−/−}\) mice develop severe dermatitis extending from the site of tissue injury induced by ear tags. The affected mice further develop several signs of systemic lupus with hypergammaglobulinemia, autoantibodies to DNA, proteinuria, and kidney pathology. Ro52, which was recently identified as an E3 ligase, mediates ubiquitination of several members of the interferon regulatory factor (IRF) family, and the Ro52-deficient mice have an enhanced production of proinflammatory cytokines that are regulated by the IRF transcription factors, including cytokines involved in the Th17 pathway (interleukin [IL] 6, IL-12/IL-23p40, and IL-17). Loss of IL-23/IL-17 by genetic deletion of IL-23/p19 in the \(Ro52^{−/−}\) mice conferred protection from skin disease and systemic autoimmunity. These data reveal that the lupus-associated Ro52 protein is an important negative regulator of proinflammatory cytokine production, and they provide a mechanism by which a defective Ro52 function can lead to tissue inflammation and systemic autoimmunity through the IL-23–Th17 pathway
Nonlinear resonant tunnelling through double-barrier structures

We study resonant tunnelling through double-barrier structures under an applied bias voltage, in which nonlinearities due to
self-interaction of electrons in the barrier regions are included. As an approximation, we concern ourselves with thin barriers
simulated by 8-function potentials. This approximation allows for an analytical expression of the transmission probability
through the structure. We show that the typical peaks due to resonant tunneling decrease and broaden as non linearity increases.
The main conclusion is that nonlinear effects degrade the peak-to-valley ratio but improve the maximum operation frequency
of the resonant tunnelling devices.FD.-A. acknowledges support from UCM through project PR161193-4811. A.S. acknowledges partial support from e.1.e. y T. (Spain) through project PB92-0248 and from the European Union Human Capital and Mobility Programme through contract ERBCHRXCT930413.Publicad
Galactic cold cores V. Dust opacity

The project Galactic Cold Cores has made Herschel observations of
interstellar clouds where the Planck satellite survey has located cold and
compact clumps. The sources range from starless clumps to protostellar cores.
We examine 116 Herschel fields to estimate the submillimetre dust opacity and
its variations. The submillimetre dust opacity was derived from Herschel data,
and near-infrared observations of the reddening of background stars are
converted into near-infrared optical depth. We studied the systematic errors
affecting these parameters and used modelling to correct for the expected
biases. The ratio of 250um and J band opacities is correlated with the cloud
location and star formation activity. We find a median ratio of
tau(250um)/tau(J)= (1.6+-0.2)*10^-3, which is more than three times the mean
value in diffuse medium. Assuming a spectral index beta=1.8 instead of
beta=2.0, the value would be lower by ~30%. No significant systematic variation
is detected with Galactocentric distance or with Galactic height. The
tau(250um)/tau(J) maps reveal six fields with clear increase of submillimetre
opacity of up to tau(250um)/tau(J) ~ 4*10^-3. These are all nearby fields with
spatially resolved clumps of high column density. We interpret the increase in
the far-infrared opacity as a sign of grain growth in the densest and coldest
regions of interstellar clouds.Comment: 28 pages, A&A, in pres
Evidence for feedback in action from the molecular gas content in the
  z~1.6 outflowing QSO XID2028

Gas outflows are believed to play a pivotal role in shaping galaxies, as they
regulate both star formation and black hole growth. Despite their ubiquitous
presence, the origin and the acceleration mechanism of such powerful and
extended winds is not yet understood. Direct observations of the cold gas
component in objects with detected outflows at other wavelengths are needed to
assess the impact of the outflow on the host galaxy interstellar medium (ISM).
We observed with the Plateau de Bure Interferometer an obscured quasar at
z~1.5, XID2028, for which the presence of an ionised outflow has been
unambiguously signalled by NIR spectroscopy. The detection of CO(3-2) emission
in this source allows us to infer the molecular gas content and compare it to
the ISM mass derived from the dust emission. We then analyze the results in the
context of recent insights on scaling relations, which describe the gas content
of the overall population of star-forming galaxies at a similar redshifts. The
Star formation efficiency (~100) and gas mass (M_gas=2.1-9.5x10^{10} M_sun)
inferred from the CO(3-2) line depend on the underlying assumptions on the
excitation of the transition and the CO-to-H2 conversion factor. However, the
combination of this information and the ISM mass estimated from the dust mass
suggests that the ISM/gas content of XID2028 is significantly lower than
expected for its observed M$_\star$, sSFR and redshift, based on the most
up-to-date calibrations (with gas fraction <20% and depletion time scale <340
Myr). Overall, the constraints we obtain from the far infrared and millimeter
data suggest that we are observing QSO feedback able to remove the gas from the
hostComment: 8 pages, 4 figures. Astronomy and Astrophysics, in pres
Type-III two Higgs doublet model plus a pseudoscalar confronted with
  $h\rightarrow\mu\tau$, muon $g-2$ and dark matter

In this work, we introduce an extra singlet pseudoscalar into the Type-III
two Higgs doublet model (2HDM) which is supposed to solve a series of problems
in the modern particle-cosmology. With existence of a light pseudoscalar, the
$h\rightarrow\mu\tau$ excess measured at CMS and as well as the $(g-2)_{\mu}$
anomaly could be simultaneously explained within certain parameter spaces that
can also tolerate the data on the flavor-violating processes
$\tau\rightarrow\mu\gamma$ and Higgs decay gained at LHC. Within the same
parameter spaces, the DM relic abundance is well accounted. Moreover, the
recently observed Galactic Center gamma ray excess(GCE) is proposed to realize
through dark matter(DM) pair annihilations, and in this work, the scenario of
the annihilation being mediated by the pseudoscalar is also addressed.Comment: 14 pages, 8 figures, version to appear in NP