pinecone/core-2020-05-10-deduplication huggingface dataset:
Quantum Computation vs. Firewalls

In this paper we discuss quantum computational restrictions on the types of
thought experiments recently used by Almheiri, Marolf, Polchinski, and Sully to
argue against the smoothness of black hole horizons. We argue that the quantum
computations required to do these experiments take a time which is exponential
in the entropy of the black hole under study, and we show that for a wide
variety of black holes this prevents the experiments from being done. We
interpret our results as motivating a broader type of non-locality than is
usually considered in the context of black hole thought experiments, and claim
that once this type of non-locality is allowed there may be no need for
firewalls. Our results do not threaten the unitarity of of black hole
evaporation or the ability of advanced civilizations to test it.Comment: Significant revision of sections 4.1-4.3; the general discussion of
  error correction is corrected (heh), and its relation to the AMPS experiment
  is made more explicit. Also a new section 3.4 is added, which gives a
  rigorous proof of the hardness of decoding for generic initial states.
  Comments are added to the introduction about an external entity "pausing" the
  black hol
Moduli Stabilization and the Holographic RG for AdS and dS

We relate moduli stabilization ($V'=0$) in the bulk of $AdS_D$ or $dS_D$ to
basic properties of the Wilsonian effective action in the holographic dual
theory on $dS_{D-1}$: the single-trace terms in the action have vanishing beta
functions, and higher-trace couplings are determined purely from lower-trace
ones. In the de Sitter case, this encodes the maximal symmetry of the bulk
spacetime in a quantity which is accessible within an observer patch. Along the
way, we clarify the role of counterterms, constraints, and operator redundancy
in the Wilsonian holographic RG prescription, reproducing the expected behavior
of the trace of the stress-energy tensor in the dual for both $AdS_D$ and
$dS_D$. We further show that metastability of the gravity-side potential energy
corresponds to a nonperturbatively small imaginary contribution to the
Wilsonian action of pure de Sitter, a result consistent with the need for
additional degrees of freedom in the holographic description of its ultimate
decay.Comment: 28 pages; v2: minor modifications, published version in JHE
M5 algebra and SO(5,5) duality

We present "M5 algebra" to derive Courant brackets of the generalized
geometry of $T\oplus \Lambda^2T^\ast \oplus \Lambda^5T^\ast$: The Courant
bracket generates the generalized diffeomorphism including gauge
transformations of three and six form gauge fields. The Dirac bracket between
selfdual gauge fields on a M5-brane gives a $C^{[3]}$-twisted contribution to
the Courant brackets. For M-theory compactified on a five dimensional torus the
U-duality symmetry is SO(5,5) and the M5 algebra basis is in the 16-dimensional
spinor representation. The M5 worldvolume diffeomorphism constraints can be
written as bilinear forms of the basis and transform as a SO(5,5) vector. We
also present an extended space spanned by the 16-dimensional coordinates with
section conditions determined from the M5 worldvolume diffeomorphism
constraints.Comment: 18 pages, v2: Eqs. (3.7) and (3.10), comments and references added.
  v3: minor corrections, to appear in JHE
Higher derivative effects for 4d AdS gravity

Motivated by holography, we explore higher derivative corrections to
four-dimensional Anti-de Sitter (AdS) gravity. We point out that in such a
theory the variational problem is generically not well-posed given only a
boundary condition for the metric. However, when one evaluates the higher
derivative terms perturbatively on a leading order Einstein solution, the
equations of motion are always second order and therefore the variational
problem indeed requires only a boundary condition for the metric. The equations
of motion required to compute the spectrum around the corrected background are
still generically higher order, with the additional boundary conditions being
associated with new operators in the dual conformal field theory. We discuss
which higher derivative curvature invariants are expected to arise in the
four-dimensional action from a top-down perspective and compute the corrections
to planar AdS black holes and to the spectrum around AdS in various cases.
Requiring that the dual theory is unitary strongly constrains the higher
derivative terms in the action, as the operators associated with the extra
boundary conditions generically have complex conformal dimensions and
non-positive norms.Comment: 57 pages; v2 - references and comments adde
Exploring double field theory

We consider a flux formulation of Double Field Theory in which fluxes are dynamical and field-dependent. Gauge consistency imposes a set of quadratic constraints on the dynamical fluxes, which can be solved by truly double configurations. The constraints are related to generalized Bianchi Identities for (non-)geometric fluxes in the double space, sourced by (exotic) branes. Following previous constructions, we then obtain generalized connections, torsion and curvatures compatible with the consistency conditions. The strong constraint-violating terms needed to make contact with gauged supergravities containing duality orbits of non-geometric fluxes, systematically arise in this formulation
Energy correlation functions for jet substructure

We show how generalized energy correlation functions can be used as a powerful probe of jet substructure. These correlation functions are based on the energies and pair-wise angles of particles within a jet, with (N + 1)-point correlators sensitive to N-prong substructure. Unlike many previous jet substructure methods, these correlation functions do not require the explicit identification of subjet regions. In addition, the correlation functions are better probes of certain soft and collinear features that are masked by other methods. We present three Monte Carlo case studies to illustrate the utility of these observables: 2-point correlators for quark/gluon discrimination, 3-point correlators for boosted W /Z/Higgs boson identification, and 4-point correlators for boosted top quark identification. For quark/gluon discrimination, the 2-point correlator is particularly powerful, as can be understood via a next-to-leading logarithmic calculation. For boosted 2-prong resonances the benefit depends on the mass of the resonance.United States. Dept. of Energy (Cooperative Research Agreement DE-FG02-05ER-41360)United States. Dept. of Energy (Early Career Research Program DE-FG02-11ER-41741)MIT International Science and Technology Initiative
Slow-Roll Inflation in Non-geometric Flux Compactification

By implementing a genetic algorithm we search for stable vacua in Type IIB
non-geometric flux compactification on an isotropic torus with orientifold
3-planes. We find that the number of stable dS and AdS vacua are of the same
order. Moreover we find that in all dS vacua the multi-field slow-roll
inflationary conditions are fulfilled. Specifically we observe that inflation
is driven by the axio-dilaton and the K\"ahler moduli. We also comment on the
existence of one stable dS vacuum in the presence of exotic orientifolds.Comment: 26 figures. (v2) Typos corrected. (v3) Eq. (2.7) and two typos on
  Table 1 and 2 were corrected. We have added an explicit expression for the
  scalar potential and an explanatory note at the end of the introduction.
  Results unchange
Search for CP violation in D+ -> phi pi+ and Ds+ -> Ks pi+ decays

A search for CP violation in D + → ϕπ + decays is performed using data collected in 2011 by the LHCb experiment corresponding to an integrated luminosity of 1.0 fb−1 at a centre of mass energy of 7 TeV. The CP -violating asymmetry is measured to be (−0.04 ± 0.14 ± 0.14)% for candidates with K − K + mass within 20 MeV/c 2 of the ϕ meson mass. A search for a CP -violating asymmetry that varies across the ϕ mass region of the D + → K − K + π + Dalitz plot is also performed, and no evidence for CP violation is found. In addition, the CP asymmetry in the TeX decay is measured to be (0.61 ± 0.83 ± 0.14)%
Naturalness of light neutralino dark matter in pMSSM after LHC, XENON100 and Planck data.

We examine the possibility of a light (below 46 GeV) neutralino dark matter (DM) candidate within the 19-parameter phenomenological Minimal Supersymmetric Standard Model (pMSSM) in the light of various recent experimental results, especially from the LHC, XENON100, and Planck. We also study the extent of electroweak fine-tuning for such a light neutralino scenario in view of the null results from the searches for supersymmetry so far. Using a Markov Chain Monte Carlo likelihood analysis of the full pMSSM parameter space, we find that a neutralino DM with mass ≳ 10 GeV can in principle still satisfy all the existing constraints. Our light neutralino solutions can be broadly divided into two regions: (i) The solutions in the 10–30 GeV neutralino mass range are highly fine-tuned and require the existence of light selectrons (below 100 GeV) in order to satisfy the observed DM relic density. We note that these are not yet conclusively ruled out by the existing LEP/LHC results, and a dedicated analysis valid for a non-unified gaugino mass spectrum is required to exclude this possibility. (ii) The solutions with low fine-tuning are mainly in the 30–46 GeV neutralino mass range. However, a major portion of it is already ruled out by the latest XENON100 upper limits on its spin-independent direct detection cross section, and the rest of the allowed points are within the XENON1T projected limit. Thus, we show that the allowed MSSM parameter space for a light neutralino DM below the LEP limit of 46 GeV, possible in supersymmetric models without gaugino mass unification, could be completely accessible in near future. This might be useful in view of the recent claims for positive hints of a DM signal in some direct detection experiments
Spacetime Entanglement with f(R) Gravity

We study the entanglement entropy of a general region in a theory of induced
gravity using holographic calculations. In particular we use holographic
entanglement entropy prescription of Ryu-Takayanagi in the context of the
Randall-Sundrum 2 model while considering general f(R) gravity in the bulk.
Showing the leading term is given by the usual Bekenstein-Hawking formula, we
confirm the conjecture by Bianchi and Myers for this theory. Moreover, we
calculate the first subleading term to entanglement entropy and show they agree
with the Wald entropy up to extrinsic curvature terms.Comment: 16 pages, 2 figure
Confinement, Phase Transitions and non-Locality in the Entanglement
  Entropy

In this paper we study the conjectural relation between confinement in a
quantum field theory and the presence of a phase transition in its
corresponding entanglement entropy. We determine the sufficient conditions for
the latter and compare to the conditions for having a confining Wilson line. We
demonstrate the relation in several examples. Superficially, it may seem that
certain confining field theories with a non-local high energy behaviour, like
the dual of D5 branes wrapping a two-cycle, do not admit the corresponding
phase transition. However, upon closer inspection we find that, through the
introduction of a regulating UV-cutoff, new eight-surface configurations
appear, that satisfy the correct concavity condition and recover the phase
transition in the entanglement entropy. We show that a local-UV-completion to
the confining non-local theories has a similar effect to that of the
aforementioned cutoff.Comment: 64 pages. Lots of figure
Search for top quark decays t → qH with H →  ƴƴ using the ATLAS detector

A search is performed for flavour-changing neutral currents in the decay of a top quark to an up-type (c, u) quark and a Higgs boson, where the Higgs boson decays to two photons. The proton-proton collision data set used corresponds to 4.7 fb−1 at √s = 7TeV and 20.3 fb−1 at √s = 8TeV collected by the ATLAS experiment at the LHC. Top quark pair events are searched for in which one top quark decays to qH and the other decays to bW. Both the hadronic and the leptonic decay modes of the W boson are used. No significant signal is observed and an upper limit is set on the t → qH branching ratio of 0.79% at the 95% confidence level. The corresponding limit on the tqH coupling combination qλ2t cH + λ2t uH is 0.17
Multi-leptons and Top-jets in the Hunt for Gluinos in R-parity Violating
  Supersymmetry

The presence of R-parity ($\mathcal{R}_p$) violation offers intersting decay
channels for the gluinos. In this work we present a new search strategy for the
gluinos in the presence of semileptonic $\mathcal{R}_p$ violating couplings
$\lambda^{'}_{133}$ and $\lambda^{'}_{233}$. We consider two scenarios (i)
$\lambda^{'}$ induced 3-body decay of gluinos to a top quark ($t$), a bottom
quark ($b$) and a light lepton ($\ell$) (ii) cascade decay of gluinos to top
quarks and neutralinos ($\widetilde{\chi}_1^0$) followed by the decay of
$\widetilde{\chi}_1^0$ to $t$, $b$ and $\ell$ through $\lambda^{'}$ couplings.
We present two different search procedures which are common to both the
scenarios. While the first one involves the traditional approach with
multi-leptons and $b$-tagged jets, the second one employs the more recent
technique to reconstruct highly energetic hadronically decaying top quarks. We
perform a detailed simulation of the signal as well as all the relevant
Standard Model backgrounds to show that the second procedure offers slightly
better sensitivity for gluino discovery. In both the procedures, a $\geq$
5$\sigma$ discovery is possible for the gluino mass in the range 1.5 -1.7 TeV
at 14 TeV LHC with 50 fb$^{-1}$ integrated luminosity.Comment: Event selection cuts optimized, results significantly improved, more
  discussions added. Version to appear in JHE
Non-Abelian discrete flavor symmetries of 10D SYM theory with magnetized
  extra dimensions

We study discrete flavor symmetries of the models based on a ten-dimensional
supersymmetric Yang-Mills (10D SYM) theory compactified on magnetized tori. We
assume non-vanishing non-factorizable fluxes as well as the orbifold
projections. These setups allow model-building with more various flavor
structures. Indeed, we show that there exist various classes of non-Abelian
discrete flavor symmetries. In particular, we find that $S_3$ flavor symmetries
can be realized in the framework of the magnetized 10D SYM theory for the first
time.Comment: 40 pages, 22 figure
Index theory and supersymmetry of 5D horizons

We prove that the near-horizon geometries of minimal gauged five-dimensional supergravity preserve at least half of the supersymmetry. If the near-horizon geometries preserve a larger fraction, then they are locally isometric to AdS 5 . Our proof is based on Lichnerowicz type theorems for two horizon Dirac operators constructed from the supercovariant connection restricted to the horizon sections, and on an application of the index theorem. An application is that all half-supersymmetric five-dimensional horizons admit an sl(2 , $ \mathbb{R} $ ) symmetry subalgebra
Lepton mixing parameters from Δ(48) family symmetry and generalised CP

We provide a systematic and thorough exploration of the Δ(48) family symmetry and the consistent generalised CP symmetry. A model-independent analysis of the achievable lepton flavor mixing is performed by considering all the possible remnant symmetries in the neutrino and the charged lepton sectors. We find a new interesting mixing pattern in which both lepton mixing angles and CP phases are nontrivial functions of a single parameter θ . The value of θ can be fixed by the measured reactor mixing angle θ 13 , and the excellent agreement with the present data can be achieved. A supersymmetric model based on Δ(48) family symmetry and generalised CP symmetry is constructed, and this new mixing pattern is exactly reproduced
The two-loop master integrals for $ q\overline{q} $ → VV

We compute the full set of two-loop Feynman integrals appearing in massless two-loop four-point functions with two off-shell legs with the same invariant mass. These integrals allow to determine the two-loop corrections to the amplitudes for vector boson pair production at hadron colliders, → VV , and thus to compute this process to next-to- next-to-leading order accuracy in QCD. The master integrals are derived using the method of differential equations, employing a canonical basis for the integrals. We obtain analytical results for all integrals, expressed in terms of multiple polylogarithms. We optimize our results for numerical evaluation by employing functions which are real valued for physical scattering kinematics and allow for an immediate power series expansion
Searching for t->c(u)h with dipole moments

A discovery of flavour-changing Higgs-boson decays would constitute an
undeniable signal of new physics. We derive model-independent constraints on
the tch and tuh couplings that arise from the bounds on hadronic electric
dipole moments. Comparisons of the present and future sensitivities with both
the direct LHC constraints and the indirect limits from D-meson physics are
also presented.Comment: 18 pages, 2 figures; v2: references added and typos corrected;
  coincides with version to be published in JHE
Monopoles and Wilson Lines

We present a semi-classical description of BPS monopoles interacting with
Wilson lines. The Wilson lines are represented as non-Abelian spin impurities.
These spins interact with the monopole degrees of freedom through a natural
connection on the moduli space. We employ this technology in N = 2 SU(2) gauge
theory to count the number of framed BPS states of a single monopole bound to
Wilson lines in different representations.Comment: 24 pages, 2 figures; v2: added angular momentum decomposition of
  bound state
The α ′ expansion on a compact manifold of exceptional holonomy

In the approximation corresponding to the classical Einstein equations, which is valid at large radius, string theory compactification on a compact manifold M of G 2 or Spin(7) holonomy gives a supersymmetric vacuum in three or two dimensions. Do α ′ corrections to the Einstein equations disturb this statement? Explicitly analyzing the leading correction, we show that the metric of M can be adjusted to maintain supersymmetry. Beyond leading order, a general argument based on low energy effective field theory in spacetime implies that this is true exactly (not just to all finite orders in α ′ ). A more elaborate field theory argument that includes the massive Kaluza-Klein modes matches the structure found in explicit calculations. In M-theory compactification on a manifold M of G 2 or Spin(7) holonomy, similar results hold to all orders in the inverse radius of M — but not exactly. The classical moduli space of G 2 metrics on a manifold M is known to be locally a Lagrangian submanifold of H 3 ( M , $ \mathbb{R} $ ) ⊕ H 4 ( M , $ \mathbb{R} $ ). We show that this remains valid to all orders in the α ′ or inverse radius expansion
Moduli spaces of SO(8) instantons on smooth ALE spaces as Higgs branches
  of 4d N=2 supersymmetric theories

The worldvolume theory of D3-branes probing four D7-branes and an O7-plane on
$\mathbb{C}^2/\mathbb{Z}_2$ is given by a supersymmetric USp x USp gauge
theory. We demonstrate that, at least for a particular choice of the holonomy
at infinity, we can go to a dual description of the gauge theory, where we can
add a Fayet-Iliopoulos term describing the blowing-up of the orbifold to the
smooth ALE space. This allows us to express the moduli space of SO(8)
instantons on the smooth ALE space as a hyperk\"ahler quotient of a flat space
times the Higgs branch of a class S theory. We also discuss a generalization to
$\mathbb{C}^2/\mathbb{Z}_{2n}$, and speculate how to extend the analysis to
bigger SO groups and to ALE spaces of other types.Comment: 18 pages, 10 figures; v2: additional references and minor changes;
  published version. arXiv admin note: substantial text overlap with
  arXiv:1402.420
Mirror symmetry in three dimensions via gauged linear quivers

Starting from mirror pairs consisting only of linear (framed A-type) quivers, we demonstrate that a wide class of three-dimensional quiver gauge theories with $ \mathcal{N} $ = 4 supersymmetry and their mirror duals can be obtained by suitably gauging flavor symmetries. Infinite families of mirror pairs including various quivers of D and E -type and their affine extensions, star-shaped quivers, and quivers with symplectic gauge groups may be generated in this fashion. We present two different computational strategies to perform the aforementioned gauging procedure — one of them involves $ \mathcal{N} $ = 2 * classical parameter space description, while the other one uses partition functions of the $ \mathcal{N} $ = 4 theories on S 3 . The partition function, in particular, turns out to be an extremely efficient tool for implementing this gauging procedure as it readily generalizes to arbitrary size of the quiver and arbitrary rank of the gauge group at each node. For most examples of mirror pairs obtained via this procedure, we perform additional checks of mirror symmetry using the Hilbert series
Remarks on analyticity and unitarity in the presence of a Strongly
  Interacting Light Higgs

Applying the three axiomatic criteria of Lorentz invariance, analyticity and
unitarity to scattering amplitudes involving the Goldstone bosons and the Higgs
boson, we derive a general sum rule for the Strongly Interacting Light Higgs
Lagrangian. This sum rule connects the IR coefficient $c_H$ to the UV
properties of the theory, and can be used, for instance, to capture the role of
resonances in processes like $V_{\rm L}V_{\rm L}\to hh$ and $V_{\rm L}V_{\rm
L}\to V_{\rm L}V_{\rm L}$, with $V=W^{\pm},Z$.Comment: 14 pages, two column format. v2: references added, one figure added,
  typos fixed. v3: references added. v4: minor change
Non-perturbative Gauge-Higgs Unification: Symmetries and Order
  Parameters

We consider pure SU(N) gauge theories defined on an orbifold lattice,
analogous to the S^1/Z_2 gauge theory orbifolds of the continuum, which
according to the perturbative analysis do not have a Higgs phase.
Non-perturbatively the conclusion for N even is the opposite, namely that
spontaneous symmetry breaking does take place and some of the gauge bosons
become massive. We interpret this new, non-perturbative phenomenon both
mathematically and physically.Comment: 25 pages, 1 figure; figure added and text improve
Non Minimal Terms in Composite Higgs Models and in QCD

We introduce a general parametrisation for theories where the Higgs is a
Goldstone boson that encompasses all existing models. Our construction deviates
from extra-dimensional or deconstructed theories through the inclusion of
"non-local" interactions in theory space. These terms are necessary to
reproduce the most general 4D effective lagrangian compatible with the
symmetries. After showing the relation of our formalism to the
Callan-Coleman-Wess-Zumino effective lagrangian we apply our framework to
SO(5)/SO(4) composite Higgs models studying the implications for the Higgs
potential, coupling of resonances and S-parameter. We also outline the
relevance of non-minimal terms in effective descriptions of QCD, studying the
electro-magnetic splitting of pions and the correlation between L_9 and L_10 in
the chiral lagrangian.Comment: 29 pages, v2 minor change