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positron beams, both polarized and unpolarized, are identified as important ingredients for the experimental programs at the next generation of lepton accelerators. in the context of the hadronic physics program at jefferson lab (jlab), positron beams are complementary, even essential, tools for a precise understanding... | an experimental program with high duty-cycle polarized and unpolarized positron beams at jefferson lab |
we present angular diameter distance measurements obtained by locating the bao scale in the distribution of galaxies selected from the first year of dark energy survey data. we consider a sample of over 1.3 million galaxies distributed over a footprint of 1336 deg2 with 0.6 < zphoto < 1 and a typical redshift unc... | dark energy survey year 1 results: measurement of the baryon acoustic oscillation scale in the distribution of galaxies to redshift 1 |
we provide five benchmark hidden valley models with perturbative parton showers, which span a wide range of dark shower phenomenology. we consider production through an s -channel, heavy mediator, which can be identified with the sm higgs. by assuming a set of well-motivated decay portals, one can moreover fix both the... | perturbative benchmark models for a dark shower search program |
we present a detection of correlated clustering between meerkat radio intensity maps and galaxies from the wigglez dark energy survey. we find a 7.7σ detection of the cross-correlation power spectrum, the amplitude of which is proportional to the product of the ${\rm h}\, {\small i}$ density fraction ($\omega _{{\rm h}... | h i intensity mapping with meerkat: power spectrum detection in cross-correlation with wigglez galaxies |
early observations with jwst have led to the discovery of an unexpectedly large density (stellar-mass density ρ * ≈ 106 m ⊙ mpc-3) of massive galaxies (stellar masses m * ≥ 1010.5 m ⊙) at extremely high redshifts z ≈ 10. while such a result is based on early measurements that are still affected by uncertainties current... | high-redshift galaxies from early jwst observations: constraints on dark energy models |
one of the most appealing approaches to ease the hubble tension is the inclusion of an early dark energy (ede) component that adds energy to the universe in a narrow redshift window around the time of recombination and dilutes faster than radiation afterwards. in this paper, we analyze ede in the framework of α -attrac... | unified framework for early dark energy from α -attractors |
optical frequency combs, a revolutionary light source characterized by discrete and equally spaced frequencies, are usually regarded as a cornerstone for advanced frequency metrology, precision spectroscopy, high-speed communication, distance ranging, molecule detection, and many others. due to the rapid development of... | advances in soliton microcomb generation |
the surface energy balance and meltwater production of the greenland ice sheet (gris) are modulated by snow and ice albedo through the amount of absorbed solar radiation. here we show, using space-borne multispectral data collected during the 3 decades from 1981 to 2012, that summertime surface albedo over the gris dec... | the darkening of the greenland ice sheet: trends, drivers, and projections (1981-2100) |
the 3.6 σ discrepancy between the predicted and measured values of the anomalous magnetic moment of positive muons can be explained by the existence of a new dark boson zμ with a mass in the sub-gev range, which is coupled predominantly to the second and third lepton generations through the lμ-lτ current. after a discu... | muon g -2 and searches for a new leptophobic sub-gev dark boson in a missing-energy experiment at cern |
we analyze the properties that any late-time modification of the λ cdm expansion history must have in order to consistently solve both the h0 and the σ8 tensions. taking a model-independent approach, we obtain a set of necessary conditions that can be applied to any late-time extension whose main effect is a deviation ... | can late-time extensions solve the h0 and σ8 tensions? |
we evaluate the consistency between lensing and clustering based on measurements from baryon oscillation spectroscopic survey combined with galaxy-galaxy lensing from dark energy survey (des) year 3, hyper suprime-cam subaru strategic program (hsc) year 1, and kilo-degree survey (kids)-1000. we find good agreement betw... | consistent lensing and clustering in a low-s8 universe with boss, des year 3, hsc year 1, and kids-1000 |
tsallis entropy is a generalization of the boltzmann-gibbs entropy in statistical theory which uses a parameter δ to measure the deviation from the standard scenario quantitatively. using concepts of tsallis entropy and future event horizon, we construct a new tsallis holographic dark energy model. the parameters c and... | new tsallis holographic dark energy |
stellar streams are excellent probes of the underlying gravitational potential in which they evolve. in this work, we fit dynamical models to five streams in the southern galactic hemisphere, combining observations from the southern stellar stream spectroscopic survey (s 5), gaia edr3, and the dark energy survey, to me... | measuring the mass of the large magellanic cloud with stellar streams observed by s 5 |
we report about the optical and electrical characterization of three high efficiency and blue sensitive silicon photomultipliers from fbk, hamamatsu, and sensl. key features of the tested devices when operated at 90% breakdown probability are peak photon detection efficiencies between 40% and 55%, temperature dependenc... | characterization of three high efficiency and blue sensitive silicon photomultipliers |
a tetrahedron is the simplest shape that cannot be rotated into its mirror image in three-dimension (3d). the 4-point correlation function (4pcf), which quantifies excess clustering of quartets of galaxies over random, is the lowest order statistic sensitive to parity violation. each galaxy defines one vertex of the te... | measurement of parity-odd modes in the large-scale 4-point correlation function of sloan digital sky survey baryon oscillation spectroscopic survey twelfth data release cmass and lowz galaxies |
we describe and test the fiducial covariance matrix model for the combined two-point function analysis of the dark energy survey year 3 (des-y3) data set. using a variety of new ansatzes for covariance modelling and testing, we validate the assumptions and approximations of this model. these include the assumption of g... | dark energy survey year 3 results: covariance modelling and its impact on parameter estimation and quality of fit |
wavefunction engineering using intraband transition is the most versatile strategy for the design of infrared devices. to date, this strategy is nevertheless limited to epitaxially grown semiconductors, which lead to prohibitive costs for many applications. meanwhile, colloidal nanocrystals have gained a high level of ... | a colloidal quantum dot infrared photodetector and its use for intraband detection |
black carbon (bc) has emerged as an important short-lived climate forcer. due to its light absorption properties, bc can darken the snow/ice surface, affect the energy balance, and further lead to acceleration of the melting of the cryosphere (e.g., glaciers, snow cover, and sea ice). by reviewing the recent published ... | a review of black carbon in snow and ice and its impact on the cryosphere |
an array of powerful neutrino-beam experiments will study the fundamental properties of neutrinos with unprecedented precision in the coming years. along with their primary neutrino-physics motivations, there has been growing recognition that these experiments can carry out a rich program of searches for new, light, we... | dark sector studies with neutrino beams |
in this work, we shall study the late-time dynamics of several f(r) gravity models. by appropriately expressing the field equations in terms of the redshift and of a statefinder function, we shall solve numerically the field equations using appropriate physical motivated initial conditions. we consider models which, by... | a panorama of viable f(r) gravity dark energy models |
we present angular diameter measurements obtained by measuring the position of baryon acoustic oscillations (bao) in an optimized sample of galaxies from the first three years of dark energy survey data (des y3). the sample consists of 7 million galaxies distributed over a footprint of 4100 deg2 with 0.6 <zphoto<... | dark energy survey year 3 results: a 2.7% measurement of baryon acoustic oscillation distance scale at redshift 0.835 |
a recent new measurement and reanalysis of past measurements suggested an improved quenching factor value and uncertainty for csi[na]. this implies a measurement of the coherent experiment of coherent elastic neutrino-nucleus scattering that is closer to the standard model prediction and has less uncertainty. we illust... | new physics from coherent data with an improved quenching factor |
horndeski gravity is the most general scalar tensor theory, with a single scalar field, leading to second-order field equations and after the gw170817 it has been severely constrained. since this theory is very important in modified gravity, it is then worth studying possible similar theories starting from other framew... | can horndeski theory be recast using teleparallel gravity? |
we construct uv-complete models for nonstandard neutrino interactions mediated by a sub-gev gauge boson z' coupled to baryon number b or b -l . a flavor-dependent z' coupling to neutrinos is induced by mixing a u (1 )'-charged dirac fermion with the active neutrinos, naturally suppressing flavor violation or nonunivers... | neutrinophilic nonstandard interactions |
we investigate the cosmology of the minimal model of neutral naturalness, the mirror twin higgs. the softly-broken mirror symmetry relating the standard model to its twin counterpart leads to significant dark radiation in tension with bbn and cmb observations. we quantify this tension and illustrate how it can be mitig... | cosmological signals of a mirror twin higgs |
many models of physics beyond the standard model predict the existence of new abelian forces with new gauge bosons mediating interactions between "dark sectors" and the standard model. we report a search for a dark boson z' coupling only to the second and third generations of leptons in the reaction e+e- -> mu+mu- z... | search for a muonic dark force at babar |
we present the first constraints on cosmology from the dark energy survey (des), using weak lensing measurements from the preliminary science verification (sv) data. we use 139 square degrees of sv data, which is less than 3% of the full des survey area. using cosmic shear 2-point measurements over three redshift bins ... | cosmology from cosmic shear with dark energy survey science verification data |
the diviner lunar radiometer experiment onboard the lunar reconnaissance orbiter (lro) has been acquiring solar reflectance and mid-infrared radiance measurements nearly continuously since july of 2009. diviner is providing the most comprehensive view of how regoliths on airless bodies store and exchange thermal energy... | the global surface temperatures of the moon as measured by the diviner lunar radiometer experiment |
this study describes the use of d. trunculus as a bioindicator of microplastic (mps) pollution due to beach urbanization related to the development of the taghazout bay tourist resort in morocco. in six sites located on the coast, mps densities ranged from 1.75 to 5.93 items per gram of d. trunculus wet weight. mps con... | the wedge clam donax trunculus l., 1758 as a bioindicator of microplastic pollution |
the possibility of crossing a phantom divide line in the extension of symmetric teleparallel gravity or the gravity, where q is the non-metricity, is investigated. the cosmic evolution of the effective equation of state parameter for dark energy is studied considering exponential, logarithmic, and combined theories. mo... | crossing phantom divide in f(q)f(q) gravity |
kaniadakis statistics is a widespread paradigm to describe complex systems in the relativistic realm. recently, gravitational and cosmological scenarios based on kaniadakis (κ-deformed) entropy have been considered, leading to generalized models that predict a richer phenomenology comparing to their standard maxwell–bo... | gravity and cosmology in kaniadakis statistics: current status and future challenges |
there is an increased interest in model agnostic search strategies for physics beyond the standard model at the large hadron collider. we introduce a deep set variational autoencoder and present results on the dark machines anomaly score challenge. we find that the method attains the best anomaly detection ability when... | deep set auto encoders for anomaly detection in particle physics |
electrocatalytic co2 reduction at considerably low overpotentials still remains a great challenge. here, a positively charged single‑atom metal electrocatalyst to largely reduce the overpotentials is designed and hence co2 electroreduction performance is accelerated. taking the metal sn as an example, kilogram‑scale si... | efficient and robust carbon dioxide electroreduction enabled by atomically dispersed sn δ + sites |
the aim of this study is to investigate the geometric structure of a thin-shell within the context of metric-affine gravity. to accomplish this, we employ a cut and paste approach to match the inner minkowski spacetime and an outer newly calculated class of black hole solutions in metric-affine gravity. these solutions... | computational analysis of thin-shell with scalar field for class of new black hole solutions in metric-affine gravity |
we discuss the feasibility of detecting the gauge boson of the u (1 )lμ-lτ symmetry, which possesses a mass in the range between mev and gev, at the belle-ii experiment. the kinetic mixing between the new gauge boson z' and photon is forbidden at the tree level and is radiatively induced. the leptonic force mediated by... | detecting the lμ-lτ gauge boson at belle ii |
the ds swampland conjecture |∇ v|/ v ≥ c, where c is presumed to be a positive constant of order unity, implies that the dark energy density of our universe can not be a cosmological constant, but mostly the potential energy of an evolving quintessence scalar field. as the dark energy includes the effects of the electr... | the ds swampland conjecture with the electroweak symmetry and qcd chiral symmetry breaking |
we present how tsallis cosmology can alleviate both $h_0$ and $\sigma_8$ tensions simultaneously. such a modified cosmological scenario is obtained by the application of the gravity-thermodynamics conjecture, but using the non-additive tsallis entropy, instead of the standard bekenstein-hawking one. hence, one obtains ... | alleviating both $h_0$ and $\\sigma_8$ tensions in tsallis cosmology |
the injection of early dark energy (ede) before the recombination, a possible resolution of the hubble tension, will not only shift the scalar spectral index $n_s$ towards $n_s=1$, but also be likely to tighten the current upper limit on tensor-to-scalar ratio $r$. in this work, with the latest cmb datasets (planck pr4... | impact of the hubble tension on the $r$-$n_s$ contour |
in this paper, we investigate the shadows and rings of the charged horndeski black hole illuminated by accretion flow that is both geometrically and optically thin. we consider two types of accretion models: spherical and thin-disk accretion flow. we find that in both types of models, the size of the charged horndeski ... | investigating shadow images and rings of the charged horndeski black hole illuminated by various thin accretions |
this paper presents a measurement of the electroweak production of two jets in association with a z γ pair, with the z boson decaying into two neutrinos. it also presents a search for invisible or partially invisible decays of a higgs boson with a mass of 125 gev produced through vector-boson fusion with a photon in th... | observation of electroweak production of two jets in association with an isolated photon and missing transverse momentum, and search for a higgs boson decaying into invisible particles at 13 tev with the atlas detector |
we show that the platinum gamma-ray burst (grb) data compilation, probing the redshift range 0.553 ≤ z ≤ 5.0, obeys a cosmological-model-independent three-parameter fundamental plane (dainotti) correlation and so is standardizable. while they probe the largely unexplored z ~ 2.3-5 part of cosmological redshift space, t... | standardizing platinum dainotti-correlated gamma-ray bursts, and using them with standardized amati-correlated gamma-ray bursts to constrain cosmological model parameters |
by combining swampland conjectures with observational data, it was suggested that our universe should lie in an asymptotic region of the quantum gravity landscape. the generalized distance conjecture for ds, the smallness of the cosmological constant and astrophysical constraints led to a scenario with one mesoscopic l... | the dark dimension in a warped throat |
we present an extension to a sunyaev-zel'dovich effect (sze) selected cluster catalog based on observations from the south pole telescope (spt); this catalog extends to lower signal-to-noise than the previous spt-sz catalog and therefore includes lower mass clusters. optically derived redshifts, centers, richnesses and... | spt-sz mcmf: an extension of the spt-sz catalog over the des region |
we examine bounds on accelerated expansion in asymptotic regions of the moduli space in string theory compactifications to four spacetime dimensions. while there are conjectures that forbid or constrain accelerated expansion in such asymptotic regions, potential counter examples have been discussed recently in the lite... | on asymptotic dark energy in string theory |
photons radiated from an evaporating black hole in principle provide complete information on the particle spectrum of nature up to the planck scale. if an evaporating black hole were to be observed, it would open a unique window onto models beyond the standard model of particle physics. to demonstrate this, we compute ... | probing the particle spectrum of nature with evaporating black holes |
we conduct the first ``light-shining-through-wall" (lsw) search for dark photons using two state-of-the-art high quality-factor superconducting radio frequency (srf) cavities and report the results of its pathfinder run. our new experimental setup enables improvements in sensitivity over previous searches and covers ne... | new exclusion limit for dark photons from an srf cavity-based search (dark srf) |
simulation-based inference (sbi) is a promising approach to leverage high fidelity cosmological simulations and extract information from the non-gaussian, non-linear scales that cannot be modeled analytically. however, scaling sbi to the next generation of cosmological surveys faces the computational challenge of requi... | sensitivity analysis of simulation-based inference for galaxy clustering |
we observe that the errors on the hubble constant $h_0$, a universal parameter in any flrw cosmology, can be larger in specific cosmological models than gaussian processes (gp) data reconstruction. we comment on the prior mean function and trace the smaller gp errors to stronger correlations, which we show precludes al... | elucidating cosmological model dependence with $h_0$ |
by using the holographic hypothesis and kaniadakis generalized entropy, which is based on relativistic statistical theory and modified boltzmann-gibbs entropy, we build kaniadakis holographic dark energy (de) model in the brans-dicke framework. we derive cosmological parameters of the kaniadakis holographic de model, w... | kaniadakis holographic dark energy in brans-dicke cosmology |
atom interferometry experiments are searching for evidence of chameleon scalar fields with ever-increasing precision. as experiments become more precise, so too must theoretical predictions. previous work has made numerous approximations to simplify the calculation, which in general requires solving a three-dimensional... | chameleon dark energy and atom interferometry |
we investigate the sensitivity at current and future hadron colliders to a heavy electrically-charged particle with a proper decay length below a centimetre, whose decay products are invisible due to below-threshold energies and/or small couplings to the standard model. a cosmologically-motivated example of a framework... | closing the window for compressed dark sectors with disappearing charged tracks |
we present the first joint analysis of cluster abundances and auto or cross-correlations of three cosmic tracer fields: galaxy density, weak gravitational lensing shear, and cluster density split by optical richness. from a joint analysis (4 ×2 pt +n ) of cluster abundances, three cluster cross-correlations, and the au... | dark energy survey year 1 results: cosmological constraints from cluster abundances, weak lensing, and galaxy correlations |
thermal quenching, in which light emission experiences a loss with increasing temperature, broadly limits luminescent efficiency at higher temperature in optical materials, such as lighting phosphors1-3 and fluorescent probes4-6. thermal quenching is commonly caused by the increased activity of phonons that leverages t... | activation of the surface dark-layer to enhance upconversion in a thermal field |
shortly after its discovery, general relativity (gr) was applied to predict the behavior of our universe on the largest scales, and later became the foundation of modern cosmology. its validity has been verified on a range of scales and environments from the solar system to merging black holes. however, experimental co... | towards testing the theory of gravity with desi: summary statistics, model predictions and future simulation requirements |
processes that darken the surface of the greenland ice sheet (gris) enhance energy absorption and accelerate melt, with consequences for global sea-level rise. here, we demonstrate how summer blooms of "glacier algae" darken the ice surface, significantly impacting the physical integrity of the environment. we identify... | algal photophysiology drives darkening and melt of the greenland ice sheet |
we try to reconcile the tension between the local 2.4 % determination of hubble constant and its global determination by planck cmb data and bao data through modeling the dark energy variously. we find that the chi-square is significantly reduced by δ χ ^2_ {all}=-6.76 in the redshift-binned dark energy model where the... | how the dark energy can reconcile planck with local determination of the hubble constant |
atomic parity violation (apv) is usually quantified in terms of the weak nuclear charge qw of a nucleus, which depends on the coupling strength between the atomic electrons and quarks. in this work, we review the importance of apv to probing new physics using effective field theory. furthermore, we correlate our findin... | new physics probes: atomic parity violation, polarized electron scattering and neutrino-nucleus coherent scattering |
a recent observation points to an excess in the expected 21-cm brightness temperature from cosmic dawn. in this paper, we present an alternative explanation of this phenomenon, an interaction in the dark sector. interacting dark energy models have been extensively studied recently and there is a whole variety of such i... | interacting dark energy: possible explanation for 21-cm absorption at cosmic dawn |
axion-like particles (alps) can provide a portal to new states of a dark sector. we study the phenomenology of this portal when the alp mainly decays invisibly, while its interaction with the standard model sector proceeds essentially via its coupling to electrons and/or photons. we reanalyse existing limits from vario... | invisible decays of axion-like particles: constraints and prospects |
recently the edges experiment reported an enhanced 21 cm absorption signal in the radio wave observation, which may be interpreted as either anomalous cooling of baryons or heating of cosmic microwave background photons. in this paper, we pursue the latter possibility. we point out that dark radiation consisting of axi... | axion-photon conversion and effects on 21 cm observation |
cosmography becomes non-predictive when cosmic data span beyond the redshift limit z ≃ 1. this leads to a strong convergence issue that jeopardizes its viability. in this work, we critically compare the two main solutions of the convergence problem, i.e. the y-parametrizations of the redshift and the alternatives to ta... | high-redshift cosmography: auxiliary variables versus padé polynomials |
the current understanding of radiation tolerance of silicon photomultipliers (sipms) is reviewed. radiation damage in silicon sensors is briefly introduced, surface and bulk effects are separately addressed. results on the operation of irradiated sipms with x-ray, gamma, electron, proton and neutron sources are present... | radiation damage of sipms |
we propose a new entropy construct that generalizes the tsallis, rényi, sharma-mittal, barrow, kaniadakis, and loop quantum gravity entropies and reduces to the bekenstein-hawking entropy in a certain limit. this proposal is applied to the schwarzschild black hole and to spatially homogeneous and isotropic cosmology, w... | how fundamental is entropy? from non-extensive statistics and black hole physics to the holographic dark universe |
we present a complete model of a dark qcd sector with light dark pions, broadly motivated by hidden naturalness arguments. the dark quarks couple to the standard model via irrelevant z- and higgs-portal operators, which encode the low-energy effects of tev-scale fermions interacting through yukawa couplings with the hi... | a theory of dark pions |
in a recent paper, herrera (phys rev d 97:044010, 2018) have proposed a new definition of complexity for static self-gravitating fluid in general relativity. in the present article, we implement this definition of complexity for static self-gravitating fluid to case of f( r) gravity. here, we found that in the frame of... | complexity factor for static anisotropic self-gravitating source in f( r) gravity |
we present new constraints on extended cosmological scenarios using the recent data from the planck 2018 legacy release. in addition to the 6 parameters of the standard λcdm model, we also simultaneously vary the dark energy equation of state, the neutrino mass, the neutrino effective number, the running of the spectra... | cosmological constraints in extended parameter space from the planck 2018 legacy release |
taking into account a fractal structure for the black hole horizon, barrow argued that the area law of entropy is modified due to quantum-gravitational effects (barrow in phys lett b 808:135643, https://doi.org/10.1016/j.physletb.2020.135643, 2020). accordingly, the corrected entropy takes the form s ∼a1 +δ /2 , where ... | observational constraints of the modified cosmology through barrow entropy |
we predict the existence of a novel type of the flat-top dissipative solitonic pulses, "platicons", in microresonators with normal group velocity dispersion (gvd). we propose methods to generate these platicons from cw pump. their duration may be altered significantly by tuning the pump frequency. the transformation of... | frequency combs and platicons in optical microresonators with normal gvd |
we present the public version of hi_class (www.hiclass-code.net), an extension of the boltzmann code class to a broad ensemble of modifications to general relativity. in particular, hi_class can calculate predictions for models based on horndeski's theory, which is the most general scalar-tensor theory described by sec... | hi_class: horndeski in the cosmic linear anisotropy solving system |
the string theory swampland proposes that there is no uv-completion for an effective field theory with an exact (metastable) de sitter vacua, thereby ruling out standard λcdm cosmology if the conjecture is taken seriously. the swampland criteria have also been shown to be in sharp tension with quintessence models under... | dark energy beyond quintessence: constraints from the swampland |
the dark energy spectroscopic instrument (desi) survey has obtained a set of spectroscopic measurements of galaxies to validate the final survey design and target selections. to assist in these tasks, we visually inspect desi spectra of approximately 2500 bright galaxies, 3500 luminous red galaxies (lrgs), and 10,000 e... | the desi survey validation: results from visual inspection of bright galaxies, luminous red galaxies, and emission-line galaxies |
we introduce redmagic, an automated algorithm for selecting luminous red galaxies (lrgs). the algorithm was specifically developed to minimize photometric redshift uncertainties in photometric large-scale structure studies. redmagic achieves this by self-training the colour cuts necessary to produce a luminosity-thresh... | redmagic: selecting luminous red galaxies from the des science verification data |
sterile neutrinos are natural extensions to the standard model of particle physics and provide a possible portal to the dark sector. we report a new search for the existence of sub-mev sterile neutrinos using the decay-momentum reconstruction technique in the decay of 7be. the experiment measures the total energy of th... | limits on the existence of sub-mev sterile neutrinos from the decay of 7>be in superconducting quantum sensors |
we present structural parameters from a wide-field homogeneous imaging survey of milky way satellites carried out with the megacam imagers on the 3.6 m canada-france-hawaii telescope and 6.5 m magellan-clay telescope. our survey targets an unbiased sample of “outer halo” satellites (i.e., substructures having galactoce... | a megacam survey of outer halo satellites. iii. photometric and structural parameters |
we present an emulator for the two-point clustering of biased tracers in real space. we construct this emulator using neural networks calibrated with more than 400 cosmological models in a 8d cosmological parameter space that includes massive neutrinos an dynamical dark energy. the properties of biased tracers are desc... | the bacco simulation project: biased tracers in real space |
the nancy grace roman space telescope will conduct a high latitude spectroscopic survey (hlss) over a large volume at high redshift, using the near-ir grism (1.0-1.93 μm, r = 435-865) and the 0.28 deg2 wide-field camera. we present a reference hlss that maps 2000 deg2 and achieves an emission-line flux limit of 10-16 e... | the high latitude spectroscopic survey on the nancy grace roman space telescope |
we measure the clustering of des year 1 galaxies that are intended to be combined with weak lensing samples in order to produce precise cosmological constraints from the joint analysis of large-scale structure and lensing correlations. two-point correlation functions are measured for a sample of 6.6 ×105 luminous red g... | dark energy survey year 1 results: galaxy clustering for combined probes |
optical fibre communication is the backbone of the internet. as essential core technologies are approaching their limits of size, speed and energy-efficiency, there is a need for new technologies that offer further scaling of data transmission capacity. here we show that a single optical frequency-comb source based on ... | petabit-per-second data transmission using a chip-scale microcomb ring resonator source |
a persistence of several anomalies in muon physics, such as the muon anomalous magnetic moment and the muonic hydrogen lamb shift, hints at new light particles beyond the standard model. we address a subset of these models that have a new light scalar state with sizable couplings to muons and suppressed couplings to el... | muon beam experiments to probe the dark sector |
in this work we study certain classes of f (r , g) gravity which have appealing phenomenological features, with respect to the successful realization of the dark energy and of the inflationary era. particularly, we discuss the general formalism and we demonstrate how several inflationary and dark energy evolutions can ... | dynamics of inflation and dark energy from f (r , g) gravity |
transport of charge carriers is at the heart of current nanoelectronics. in conventional materials, electronic transport can be controlled by applying electric fields. atomically thin semiconductors, however, are governed by excitons, which are neutral electron-hole pairs and as such cannot be controlled by electrical ... | dark exciton anti-funneling in atomically thin semiconductors |
searches for anomalies are a significant motivation for the lhc and help define key analysis steps, including triggers. we discuss specific examples how lhc anomalies can be defined through probability density estimates, evaluated in a physics space or in an appropriate neural network latent space, and discuss the mode... | what's anomalous in lhc jets? |
we present the first weak-lensing mass calibration and x-ray scaling relations of galaxy clusters and groups selected in the erosita final equatorial depth survey (efeds) observed by spectrum roentgen gamma/erosita over a contiguous footprint with an area of ≈140 deg2, using the three-year (s19a) weak-lensing data from... | the erosita final equatorial-depth survey (efeds). x-ray observable-to-mass-and-redshift relations of galaxy clusters and groups with weak-lensing mass calibration from the hyper suprime-cam subaru strategic program survey |
most existing theories of dark energy and/or modified gravity, involving a scalar degree of freedom, can be conveniently described within the framework of the effective theory of dark energy, based on the unitary gauge where the scalar field is uniform. we extend this effective approach by allowing the lagrangian in un... | effective description of higher-order scalar-tensor theories |
we present weak lensing shear catalogues for 139 square degrees of data taken during the science verification (sv) time for the new dark energy camera (decam) being used for the dark energy survey (des). we describe our object selection, point spread function estimation and shear measurement procedures using two indepe... | the des science verification weak lensing shear catalogues |
we explore scenarios where the r( d (∗)) anomalies arise from semitauonic decays to a right-handed sterile neutrino. we perform an eft study of all five simplified models capable of generating at tree-level the lowest dimension electroweak operators that give rise to this decay. we analyze their compatibility with curr... | right-handed neutrinos and r(d(∗)) |
we investigate the constraints on early dark energy (ede) by combining the most recent cmb observations available, act dr4, spt-3g, and planck2018 (ℓtt,max=1000 ) data. this combined cmb dataset favors nonzero ede fractions and large hubble constants. the inclusion of bao +pantheon data has little effect on the results... | toward early dark energy and ns=1 with p l a n c k , act, and spt observations |
early dark energy (ede) is a promising model to resolve the hubble tension, that, informed by cosmic microwave background data, features a generalization of the potential energy usually associated with axion-like particles. we develop realizations of ede in type iib string theory with the ede field identified as either... | early dark energy in type iib string theory |
this review article summarizes the advancement in the studies of earth-affecting solar transients in the last decade that encompasses most of solar cycle 24. it is a part of the effort of the international study of earth-affecting solar transients (isest) project, sponsored by the scostep/varsiti program (2014-2018). t... | earth-affecting solar transients: a review of progresses in solar cycle 24 |
it has recently been shown that the class of running vacuum models (rvms) has the capacity to fit the overall cosmological observations better than the concordance λcdm model, therefore supporting the possibility of dynamical dark energy (de). apart from the cosmic microwave background (cmb) anisotropies, the most cruc... | relaxing the σ 8-tension through running vacuum in the universe |
many scientific investigations of photometric galaxy surveys require redshift estimates, whose uncertainty properties are best encapsulated by photometric redshift (photo-z) posterior probability density functions (pdfs). a plethora of photo-z pdf estimation methodologies abound, producing discrepant results with no co... | evaluation of probabilistic photometric redshift estimation approaches for the rubin observatory legacy survey of space and time (lsst) |
experiments using proton beams at high luminosity colliders and fixed target facilities provide impressive sensitivity to new light weakly coupled degrees of freedom. with these experiments in mind, we revisit the production of dark vectors and scalars via proton bremsstrahlung, making use of a model that describes the... | dark sector production via proton bremsstrahlung |
we review the equations determining the photon sphere radius and the black hole shadow radius, and calculate the cosmological constant corrections arising when the dark energy action has the usual form, and when dark energy arises from a weyl scaling invariant dark energy action. for black hole targets of the event hor... | cosmological constant corrections to the photon sphere and black hole shadow radii |
we examine the robustness of collider phenomenology predictions for a dark sector scenario with qcd-like properties. pair production of dark quarks at the lhc can result in a wide variety of signatures, depending on the details of the new physics model. a particularly challenging signal results when prompt production i... | jet substructure from dark sector showers |
we construct an emulator for the halo mass function over group and cluster mass scales for a range of cosmologies, including the effects of dynamical dark energy and massive neutrinos. the emulator is based on the recently completed mira-titan universe suite of cosmological n-body simulations. the main set of simulatio... | the mira-titan universe. iii. emulation of the halo mass function |
we present the data-driven late-time reconstruction of gravitational theories and dark energy models on cosmological scales. we showcase the power of present cosmological probes at constraining these models and quantify the knowledge of their properties that can be acquired through state of the art data. this reconstru... | reconstructing gravity on cosmological scales |
over the last few years, a large family of cosmological attractor models has been discovered, which can successfully match the latest inflation-related observational data. many of these models can also describe a small cosmological constant λ, which provides the most natural description of the present stage of the cosm... | dark energy, α-attractors, and large-scale structure surveys |
cosmography represents an important branch of cosmology which aims to describe the universe without the need of postulating a priori any particular cosmological model. all quantities of interest are expanded as a taylor series around here and now, providing in principle, a way of directly matching with cosmological dat... | on the theory and applications of modern cosmography |
a shorter sound horizon scale at the recombination epoch, arising from introducing extra energy components such as extra radiation or early dark energy (ede), is a simple approach to resolving the so-called hubble tension. we compare ede models, an extra radiation model, and a model in which ede and extra radiation coe... | comparing early dark energy and extra radiation solutions to the hubble tension with bbn |
using a new sample of extremely metal poor systems, the empress survey has recently reported a primordial helium abundance that is 3 σ smaller than the prediction from the standard big bang nucleosynthesis (bbn) scenario. this measurement could be interpreted as a hint for a primordial lepton asymmetry in the electron ... | primordial lepton asymmetries in the precision cosmology era: current status and future sensitivities from bbn and the cmb |
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