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we obtain a reliable cosmological bound on the axion mass ma by (1) deriving the production rate directly from pion-pion scattering data, which overcomes the breakdown of chiral perturbation theory and results in ∼30 % differences from previous estimates; (2) including momentum dependence in the boltzmann equations for... | improved hot dark matter bound on the qcd axion |
the first deep field images from the james webb space telescope (jwst) of the galaxy cluster smacs j0723.3-7327 reveal a wealth of new lensed images at uncharted infrared wavelengths, with unprecedented depth and resolution. here we securely identify 14 new sets of multiply imaged galaxies totaling 42 images, adding to... | unscrambling the lensed galaxies in jwst images behind smacs 0723 |
we investigate the impact of interactions between hidden sectors and the discovered higgs boson h125, allowing for additional invisible decay channels of h125. we perform χ2-fits to the measurements of the higgs-boson cross sections as a function of the invisible branching ratio and different combinations of coupling m... | higgs-boson visible and invisible constraints on hidden sectors |
cosmological colliders can preserve information from interactions at very high energy scale, and imprint them on cosmological observables. taking the squeezed limit of cosmological perturbation bispectrum, information of the intermediate particle can be directly extracted from observations such as cosmological microwav... | axion isocurvature collider |
dark matter particles can form halos gravitationally bound to massive astrophysical objects. the earth could have such a halo where depending on the particle mass, the halo either extends beyond the surface or is confined to the earth's interior. we consider the possibility that if dark matter particles are coupled to ... | probing a local dark matter halo with neutrino oscillations |
tightly bound excitons in monolayer semiconductors represent a versatile platform to study two-dimensional propagation of neutral quasiparticles. their intrinsic properties, however, can be severely obscured by spatial energy fluctuations due to a high sensitivity to the immediate environment. here, we take advantage o... | exciton diffusion in monolayer semiconductors with suppressed disorder |
we analyse the cold dark matter density profiles of 54 galaxy haloes simulated with feedback in realistic environments (fire)-2 galaxy formation physics, each resolved within $0.5{{\ \rm per\ cent}}$ of the halo virial radius. these haloes contain galaxies with masses that range from ultrafaint dwarfs ($m_\star \simeq ... | a dark matter profile to model diverse feedback-induced core sizes of λcdm haloes |
we consider the direct s -channel gravitational production of dark matter during the reheating process. independent of the identity of the dark matter candidate or its nongravitational interactions, the gravitational process is always present and provides a minimal production mechanism. during reheating, a thermal bath... | gravitational production of dark matter during reheating |
we study the implications of the higgs discovery and of recent results from dark matter searches on real singlet scalar dark matter. the phenomenology of the model is defined by only two parameters, the singlet scalar mass msand the quartic coupling a 2 between the su(2) higgs and the singlet scalar. we concentrate on ... | closing in on singlet scalar dark matter: lux, invisible higgs decays and gamma-ray lines |
we provide a generic framework to obtain stable dark matter along with naturally small dirac neutrino masses generated at the loop level. this is achieved through the spontaneous breaking of the global u (1 )b -l symmetry already present in the standard model. the u (1 )b-l symmetry is broken down to a residual even zn... | dark matter stability and dirac neutrinos using only standard model symmetries |
dark matter (dm) from freeze-in or superwimp production is well known to imprint non-cold dm signatures on cosmological observables. we derive constraints from lyman-α forest observations for both cases, basing ourselves on a reinterpretation of the existing lyman-α limits on thermal warm dm. we exclude dm masses below... | lyman-α constraints on freeze-in and superwimps |
oscillons are spatially localized, time-periodic, and long-lived configurations that were primarily proposed in scalar field theories with attractive self-interactions. in this paper, we demonstrate that oscillons also exist in the low-energy effective theory of an interacting massive (real) vector field. we provide tw... | polarized vector oscillons |
the darwin observatory is a proposed next-generation experiment to search for particle dark matter and for the neutrinoless double beta decay of 136xe. out of its 50 t total natural xenon inventory, 40 t will be the active target of a time projection chamber which thus contains about 3.6 t of 136xe. here, we show that ... | sensitivity of the darwin observatory to the neutrinoless double beta decay of 136xe |
searches for invisible decays of the higgs boson are presented. the data collected with the cms detector at the lhc correspond to integrated luminosities of 5.1, 19.7, and 2.3 fb-1 at centre-of-mass energies of 7, 8, and 13 tev, respectively. the search channels target higgs boson production via gluon fusion, vector bo... | searches for invisible decays of the higgs boson in pp collisions at √{s} = 7 , 8, and 13 tev |
we report on a direct search for sub-gev dark photons (a' ), which might be produced in the reaction e-z →e-z a' via kinetic mixing with photons by 100 gev electrons incident on an active target in the na64 experiment at the cern sps. the dark photons would decay invisibly into dark matter particles resulting in events... | search for invisible decays of sub-gev dark photons in missing-energy events at the cern sps |
we present a new power spectrum emulator named euclidemulator that estimates the nonlinear correction to the linear dark matter power spectrum depending on the six cosmological parameters ωb, ωm, ns, h, w0, and σ8. it is constructed using the uncertainty quantification software uqlab using a spectral decomposition meth... | euclid preparation: ii. the euclidemulator - a tool to compute the cosmology dependence of the nonlinear matter power spectrum |
a search for narrow and broad resonances with masses greater than 1.8 tev decaying to a pair of jets is presented. the search uses proton-proton collision data at $\sqrt{s} =$ 13 tev collected at the lhc, corresponding to an integrated luminosity of 137 fb$^{-1}$. the background arising from standard model processes is... | search for high mass dijet resonances with a new background prediction method in proton-proton collisions at $\\sqrt{s} =$ 13 tev |
dark matter represents currently an outstanding problem in both cosmology and particle physics. in this review we discuss the possible explanations for dark matter and the experimental observables which can eventually lead to the discovery of dark matter and its nature, and demonstrate the close interplay between the c... | dark matter and the early universe: a review |
ultralight axions and other bosons are dark matter candidates present in many high energy physics theories beyond the standard model. in particular, the string axiverse postulates the existence of up to 𝒪(100) light scalar bosons constituting the dark sector. we test the validity of the effective field theory of large... | constraining ultralight axions with galaxy surveys |
we provide an updated assessment of the power of the cherenkov telescope array (cta) to search for thermally produced dark matter at the tev scale, via the associated gamma-ray signal from pair-annihilating dark matter particles in the region around the galactic centre. we find that cta will open a new window of discov... | sensitivity of the cherenkov telescope array to a dark matter signal from the galactic centre |
cosmological surveys aim at answering fundamental questions about our universe, including the nature of dark matter or the reason of unexpected accelerated expansion of the universe. in order to answer these questions, two important ingredients are needed: 1) data from observations and 2) a theoretical model that allow... | from dark matter to galaxies with convolutional networks |
we investigate the cosmological implications of $f(q)$ gravity, which is a modified theory of gravity based on non-metricity, in non-flat geometry. we perform a detailed dynamical-system analysis keeping the $f(q)$ function completely arbitrary. as we show, the cosmological scenario admits a dark-matter dominated point... | cosmology of $f(q)$ gravity in non-flat universe |
in the context of the esa m5 (medium mission) call we proposed a new satellite mission, theia, based on relative astrometry and extreme precision to study the motion of very faint objects in the universe. theia is primarily designed to study the local dark matter properties, the existence of earth-like exoplanets in ou... | theia: faint objects in motion or the new astrometry frontier |
we report on a search for nuclear recoil signals from solar b 8 neutrinos elastically scattering off xenon nuclei in xenon1t data, lowering the energy threshold from 2.6 to 1.6 kev . we develop a variety of novel techniques to limit the resulting increase in backgrounds near the threshold. no significant b 8 neutrinoli... | search for coherent elastic scattering of solar b 8 neutrinos in the xenon1t dark matter experiment |
multi-component dark matter scenarios constitute natural extensions of standard single-component setups and offer attractive new dynamics that could be adopted to solve various puzzles of dark matter. in this work we present and illustrate properties of a minimal uv-complete vector-fermion dark matter model where two o... | multi-component dark matter: the vector and fermion case |
the idea of this work is to investigate the constraints on the dark matter (dm) allowed parameter space from high scale validity (absolute stability of higgs vacuum and perturbativity) in presence of multi particle dark sector and heavy right handed neutrinos to address correct neutrino mass. we illustrate a simple two... | two component dark matter with inert higgs doublet: neutrino mass, high scale validity and collider searches |
neutrinos are the standard model (sm) particles which we understand the least, often due to how weakly they interact with the other sm particles. beyond this, very little is known about interactions among the neutrinos, i.e., their self-interactions. the sm predicts neutrino self-interactions at a level beyond any curr... | neutrino self-interactions: a white paper |
we discuss some implications of the recently suggested swampland conjecture |∇v/| v ≳c ∼1 , together with a previous one δ ϕ ≲1 . we list some implications for particle phenomenology and the early universe. the most intriguing implication of the conjecture could be a significant shift in allowed inflationary models, if... | draining the swampland |
feebly interacting massive particles (fimps) are dark matter candidates that never thermalize in the early universe and whose production takes place via decays and/or scatterings of thermal bath particles. if fimps interactions with the thermal bath are renormalizable, a scenario which is known as freeze-in, production... | lower mass bounds on fimp dark matter produced via freeze-in |
we explore the role of redshift-space galaxy clustering data in constraining nongravitational interactions between dark energy (de) and dark matter (dm), for which state-of-the-art limits have so far been obtained from late-time background measurements. we use the joint likelihood for prereconstruction full-shape (fs) ... | new tests of dark sector interactions from the full-shape galaxy power spectrum |
we present a determination of the pion-nucleon (π n ) σ term σπ n based on the cheng-dashen low-energy theorem (let), taking advantage of the recent high-precision data from pionic atoms to pin down the π n scattering lengths as well as of constraints from analyticity, unitarity, and crossing symmetry in the form of ro... | high-precision determination of the pion-nucleon σ term from roy-steiner equations |
we investigate the optical properties of spin-triplet interlayer excitons in heterobilayer transition metal dichalcogenides in comparison with the spin-singlet ones. surprisingly, the optical transition dipole of the spin-triplet exciton is found to be in the same order of magnitude to that of the spin-singlet exciton,... | brightened spin-triplet interlayer excitons and optical selection rules in van der waals heterobilayers |
we propose that the dark matter abundance is set by the decoupling of inelastic scattering instead of annihilations. this coscattering mechanism is generically realized if dark matter scatters against states of comparable mass from the thermal bath. coscattering points to dark matter that is exponentially lighter than ... | fourth exception in the calculation of relic abundances |
we present a new parametric lens model for the massive galaxy cluster abell 2744 based on new ultra-deep jwst imaging taken in the framework of the uncover program. these observations constitute the deepest jwst images of a lensing cluster to date, adding to existing deep hubble space telescope (hst) images and the rec... | uncovering the extended strong lensing structures of abell 2744 with the deepest jwst imaging |
we investigate constraints on scalar dark matter (dm) by analyzing the lyman-α forest, which probes structure formation at medium and small scales, and also by studying its cosmological consequences at high and low redshift. for scalar dm that constitutes more than 30% of the total dm density, we obtain a lower limit m... | lyman-α constraints on ultralight scalar dark matter: implications for the early and late universe |
we explore the constraints imposed by the cancellation of triangle anomalies on models in which the flavour anomalies reported by lhcb and other experiments are due to an extra u(1)^' gauge boson z^' . we assume universal and rational u(1)^' charges for the first two generations of left-handed quarks and of right-hande... | anomaly-free models for flavour anomalies |
we analyze how dark matter (dm) can be produced in the early universe, working in the framework of a hidden sector charged under a u (1 )' gauge symmetry and interacting with the standard model through kinetic mixing. depending on the masses of the dark matter particle and of the dark photon, as well as on the hidden u... | dark matter from dark photons: a taxonomy of dark matter production |
we present a comprehensive optical study of the excitonic zeeman effects in transition metal dichalcogenide monolayers, which are discussed comparatively for selected materials: mose2, wse2 and ws2. we introduce a simple semi-phenomenological description of the magnetic field evolution of individual electronic states i... | orbital, spin and valley contributions to zeeman splitting of excitonic resonances in mose2, wse2 and ws2 monolayers |
the dynamics of exciton formation in transition metal dichalcogenides is difficult to measure experimentally, since many momentum-indirect exciton states are not accessible to optical interband spectroscopy. here, we combine a tuneable pump, high-harmonic probe laser source with a 3d momentum imaging technique to map p... | momentum-resolved observation of exciton formation dynamics in monolayer ws2 |
one intriguing beyond-the-standard-model particle is the qcd axion, which could simultaneously provide a solution to the strong c p problem and account for some, if not all, of the dark matter density in the universe. this particle is a pseudo-nambu-goldstone boson of the conjectured peccei-quinn symmetry of the standa... | lattice qcd input for axion cosmology |
self-gravitating bosonic fields can support stable and localized (solitonic) field configurations. such solitons should be ubiquitous in models of axion dark matter, with their characteristic mass and size depending on some inverse power of the axion mass, ma. using a scaling symmetry and the uncertainty principle, the... | axion dark matter, solitons and the cusp-core problem |
we construct a field-based bayesian hierarchical model for cosmic shear that includes, for the first time, the important astrophysical systematics of intrinsic alignments and baryon feedback, in addition to a gravity model. we add to the borg-wl framework the tidal alignment and tidal torquing model (tatt) for intrinsi... | field-level inference of cosmic shear with intrinsic alignments and baryons |
constraining the dark energy deceleration parameter is one of the fascinating topics in the recent cosmological paradigm. this work aims to reconstruct the dark energy using parametrization of the deceleration parameter in a flat flrw universe filled with radiation, dark energy, and pressure-less dark matter. thus, we ... | data analysis of three parameter models of deceleration parameter in flrw universe |
we present a new mechanism for producing the correct relic abundance of dark photon dark matter over a wide range of its mass, extending down to $10^{-20}\,\mathrm{ev}$. the dark matter abundance is initially stored in an axion which is misaligned from its minimum. when the axion starts oscillating, it efficiently tran... | relic abundance of dark photon dark matter |
with gaia data release 2, the astronomical community is entering a new era of multidimensional surveys of the milky way. this new phase-space view of our galaxy demands new tools for comparing observations to simulations of milky way-mass galaxies in a cosmological context, to test the physics of both dark matter and g... | synthetic gaia surveys from the fire cosmological simulations of milky way-mass galaxies |
we present new determinations of the rest-uv luminosity functions (lfs) at z = 2-9 to extremely low luminosities (>-14 mag) from a sample of >2500 lensed galaxies found behind the hubble frontier fields (hff) clusters. for the first time, we present faint-end slope results from lensed samples that are fully consi... | z 2-9 galaxies magnified by the hubble frontier field clusters. ii. luminosity functions and constraints on a faint-end turnover |
in 2007, we proposed the idea of dark stars. the first phase of stellar evolution in the history of the universe may be dark stars (ds), powered by dark matter (dm) heating rather than by nuclear fusion. although made almost entirely of hydrogen and helium from the big bang, they form at the centers of protogalaxies wh... | supermassive dark star candidates seen by jwst |
in the leading paradigm of modern cosmology, about 80% of our universe's matter content is in the form of hypothetical, as yet undetected particles. these do not emit or absorb radiation at any observable wavelengths, and therefore constitute the so-called dark matter (dm) component of the universe. detecting the parti... | atomic responses to general dark matter-electron interactions |
weakly interacting massive particles (wimps) have long reigned as one of the leading classes of dark matter candidates. the observed dark matter abundance can be naturally obtained by freezeout of weak-scale dark matter annihilations in the early universe. this "thermal wimp" scenario makes direct predictions for the t... | gev-scale thermal wimps: not even slightly ruled out |
a search for dark matter particles is performed using events with large missing transverse momentum, at least one energetic jet, and no leptons, in proton-proton collisions at √{s}=13 tev collected with the cms detector at the lhc. the data sample corresponds to an integrated luminosity of 12.9 fb-1. the search include... | search for dark matter produced with an energetic jet or a hadronically decaying w or z boson at √{s}=13 tev |
we examine the internal consistency of the planck 2015 cosmic microwave background (cmb) temperature anisotropy power spectrum. we show that tension exists between cosmological constant cold dark matter ({{λ }}{cdm}) model parameters inferred from multipoles {\ell }\lt 1000 (roughly those accessible to wilkinson microw... | quantifying discordance in the 2015 planck cmb spectrum |
a massive u (1 )'gauge boson known as a "dark photon" or a ', has long been proposed as a potential explanation for the discrepancy observed between the experimental measurement and theoretical determination of the anomalous magnetic moment of the muon (gμ-2 ) anomaly. recently, experimental results have excluded this ... | revisiting the dark photon explanation of the muon anomalous magnetic moment |
the purpose of the current article is to present a brief albeit accurate presentation of the main tools used in the study of symmetries of lagrange equations for holonomic systems and subsequently to show how these tools are applied in the major models of modern cosmology in order to derive exact solutions and deal wit... | symmetries of differential equations in cosmology |
gravitational interactions between the large magellanic cloud (lmc) and the stellar and dark matter halo of the milky way are expected to give rise to disequilibrium phenomena in the outer milky way1-7. a local wake is predicted to trail the orbit of the lmc, and a large-scale overdensity is predicted to exist across a... | all-sky dynamical response of the galactic halo to the large magellanic cloud |
this document summarises proposed searches for new physics accessible in the heavy-ion mode at the cern large hadron collider (lhc), both through hadronic and ultraperipheral γγ interactions, and that have a competitive or, even, unique discovery potential compared to standard proton-proton collision studies. illustrat... | new physics searches with heavy-ion collisions at the cern large hadron collider |
motivated by the current strong constraints on the spin-independent dark matter (dm)-nucleus scattering, we investigate the spin-dependent (sd) interactions of the light majorana dm with the nucleus mediated by an axial-vector boson. due to the small nucleus recoil energy, the ionization signals have now been used to p... | direct detection of spin-dependent sub-gev dark matter via migdal effect |
the electroweak (ew) sector of the minimal supersymmetric extension of the standard model (mssm), assuming the lightest neutralino as dark matter (dm) candidate, can account for a variety of experimental results. this includes the dm direct detection limits, the searches for ew superpartners at the lhc, and in particul... | interdependence of the new "muon g-2" result and the w-boson mass |
for the minimal qcd axion model it is generally believed that overproduction of dark matter constrains the axion mass to be above a certain threshold, or at least that the initial misalignment angle must be tuned if the mass is below that threshold. we demonstrate that this is incorrect. during inflation the axion tend... | stochastic axion scenario |
the pandax-4t experiment, a 4-ton scale dark matter direct detection experiment, is being planned at the china jinping un- derground laboratory. in this paper we present a simulation study of the expected background in this experiment. in a 2.8-ton fiducial mass and the signal region between 1-10 kev electron equivalen... | dark matter direct search sensitivity of the pandax-4t experiment |
in this report we present the status of the magnetized disk and mirror axion experiment (madmax), the first dielectric haloscope for the direct search of dark matter axions in the mass range of 40 to 400 $\mu$ev. madmax will consist of several parallel dielectric disks, which are placed in a strong magnetic field and w... | madmax status report |
a model of vector dark matter that communicates with the standard model only through gravitational interactions has been investigated. it has been shown in detail how does the canonical quantization of the vector field in varying flrw geometry implies a tachyonic enhancement of some of its momentum modes. approximate s... | gravitational production of vector dark matter |
there is a large consensus that gas in high-z galaxies is highly turbulent, because of a combination of stellar feedback processes and gravitational instabilities driven by mergers and gas accretion. in this paper, we present the analysis of a sample of five dusty star forming galaxies (dsfgs) at 4 ≲ z ≲ 5. taking adva... | dynamical properties of z4.5 dusty star-forming galaxies and their connection with local early-type galaxies |
we consider direct-detection searches for sub-gev dark matter via electron scatterings in the presence of large interactions between dark and ordinary matter. scatterings both on electrons and nuclei in the earth's crust, atmosphere, and shielding material attenuate the expected local dark matter flux at a terrestrial ... | direct detection of strongly interacting sub-gev dark matter via electron recoils |
absorption of fermionic dark matter leads to a range of distinct and novel signatures at dark matter direct detection and neutrino experiments. we study the possible signals from fermionic absorption by nuclear targets, which we divide into two classes of four fermi operators: neutral and charged current. in the neutra... | absorption of fermionic dark matter by nuclear targets |
in organic microcavities, hybrid light-matter states can form with energies that differ from the bare molecular excitation energies by nearly 1 ev. a timely question, given recent advances in the development of thermally activated delayed fluorescence materials, is whether strong light-matter coupling can be used to in... | inverting singlet and triplet excited states using strong light-matter coupling |
a hidden sector with a mass gap undergoes an epoch of cannibalism if number changing interactions are active when the temperature drops below the mass of the lightest hidden particle. during cannibalism, the hidden sector temperature decreases only logarithmically with the scale factor. we consider the possibility that... | phases of cannibal dark matter |
we construct cosmic microwave background lensing mass maps using data from the 2014 and 2015 seasons of observations with the atacama cosmology telescope (act). these maps cover 2100 square degrees of sky and overlap with a wide variety of optical surveys. the maps are signal dominated on large scales and have fidelity... | the atacama cosmology telescope: a cmb lensing mass map over 2100 square degrees of sky and its cross-correlation with boss-cmass galaxies |
we perform a systematic analysis of dark matter production during postinflationary reheating. following the period of exponential expansion, the inflaton begins a period of damped oscillations as it decays. these oscillations and the evolution of temperature of the thermalized decay products depend on the shape of the ... | reheating and post-inflationary production of dark matter |
recently, mnbi2te4 has been discovered as the first intrinsic antiferromagnetic topological insulator (afm ti), and will become a promising material to discover exotic topological quantum phenomena. in this work, we have realized the successful synthesis of high-quality mnbi2te4 single crystals by solid-state reactions... | antiferromagnetic topological insulator mnbi2te4: synthesis and magnetic properties |
the cosmological information extracted from photometric surveys is most robust when multiple probes of the large scale structure of the universe are used. two of the most sensitive probes are the clustering of galaxies and the tangential shear of background galaxy shapes produced by those foreground galaxies, so-called... | dark energy survey year 3 results: cosmological constraints from galaxy clustering and galaxy-galaxy lensing using the maglim lens sample |
many low-threshold experiments observe sharply rising event rates of yet unknown origins below a few hundred ev, and larger than expected from known backgrounds. due to the significant impact of this excess on the dark matter or neutrino sensitivity of these experiments, a collective effort has been started to share th... | excess workshop: descriptions of rising low-energy spectra |
we discuss a flavourful z' portal model with a coupling to fourth-family singlet dirac neutrino dark matter. in the absence of mixing, the z' is fermiophobic, having no couplings to the three chiral families, but does couple to a fourth vector-like family. due to mixing effects, the z' gets induced couplings to second ... | flavourful z' portal for vector-like neutrino dark matter and {r}_{k^{(*)}} |
the xenon1t experiment at the laboratori nazionali del gran sasso is the most sensitive direct detection experiment for dark matter in the form of weakly interacting particles (wimps) with masses above 6 gev /c2 scattering off nuclei. the detector employs a dual-phase time projection chamber with 2.0 metric tons of liq... | xenon1t dark matter data analysis: signal reconstruction, calibration, and event selection |
we determine the thermal evolution of the intergalactic medium (igm) over 3 gyr of cosmic time 1.8< z< 5.4 by comparing measurements of the lyα forest power spectrum to a suite of ∼70 hydrodynamical simulations. we conduct bayesian inference of igm thermal parameters using an end-to-end forward modeling framework... | new constraints on igm thermal evolution from the lyα forest power spectrum |
we examine the hypothesis of decaying heavy dark matter (hdm) in the context of the icecube highest energy neutrino events and recent limits on the diffuse flux of high-energy photons. we consider dark matter (dm) particles x of mass 1 06≤mx≤1016 gev decaying on tree level into x →ν ν ¯ , x →e+e- , and x →q q ¯. the fu... | heavy decaying dark matter and icecube high energy neutrinos |
accurate cosmology from upcoming weak lensing surveys relies on knowledge of the total matter power spectrum at per cent level at scales k < 10 h mpc-1, for which modelling the impact of baryonic physics is crucial. we compare measurements of the total matter power spectrum from the horizon cosmological hydrodynamic... | the impact of baryons on the matter power spectrum from the horizon-agn cosmological hydrodynamical simulation |
we present cosmological constraints from a joint cosmic shear analysis of the kilo-degree survey (kv450) and the dark energy survey (des-y1), which were conducted using complete orthogonal sets of e/b-integrals (cosebis). with cosebis, we isolated any b-modes that have a non-cosmic shear origin and demonstrate the robu... | kids+viking-450 and des-y1 combined: mitigating baryon feedback uncertainty with cosebis |
we formulate an effective theory of structure formation (ethos) that enables cosmological structure formation to be computed in almost any microphysical model of dark matter physics. this framework maps the detailed microphysical theories of particle dark matter interactions into the physical effective parameters that ... | ethos—an effective theory of structure formation: from dark particle physics to the matter distribution of the universe |
we test extensions to the standard cosmological model with weak gravitational lensing tomography using 450 deg2 of imaging data from the kilo degree survey (kids). in these extended cosmologies, which include massive neutrinos, non-zero curvature, evolving dark energy, modified gravity and running of the scalar spectra... | kids-450: testing extensions to the standard cosmological model |
modern comagnetometry is-in absolute energy units-the most sensitive experimental technique for measuring the energy splitting between quantum states, with certain implementations measuring the nuclear spin-up/spin-down splitting at the 10-26 ev level. by measuring and subtracting the leading magnetic effects on the sp... | comagnetometer probes of dark matter and new physics |
an only early or only late time alteration to $\lambda$cdm has been inadequate at resolving both the $h_0$ and $s_8$ tensions simultaneously; however, a combination of early and late time alterations to $\lambda$cdm can provide a solution to both tensions. as an illustration, we examine a combined early dark energy - d... | the $h_0$ and $s_8$ tensions necessitate early and late time changes to $\\lambda$cdm |
we present nuclear structure factors that describe the generalized spin-independent coupling of weakly interacting massive particles (wimps) to nuclei. our results are based on state-of-the-art nuclear structure calculations using the large-scale nuclear shell model. starting from quark- and gluon-level operators, we c... | nuclear structure factors for general spin-independent wimp-nucleus scattering |
we present a model for the evolution of the galaxy ultraviolet (uv) luminosity function (lf) across cosmic time where star formation is linked to the assembly of dark matter halos under the assumption of a mass-dependent, but redshift-independent, efficiency. we introduce a new self-consistent treatment of the halo sta... | the galaxy uv luminosity function before the epoch of reionization |
this chapter is a non-expert introduction to the effective field theory of large scale structure. first, we give a detailed pedagogical explanation of why previous attempts to build non-linear cosmological perturbation theory failed. after that we introduce the description of dark matter as an effective non-ideal fluid... | effective field theory for large scale structure |
we introduce the the three hundred project, an endeavour to model 324 large galaxy clusters with full-physics hydrodynamical re-simulations. here we present the data set and study the differences to observations for fundamental galaxy cluster properties and scaling relations. we find that the modelled galaxy clusters a... | the three hundred project: a large catalogue of theoretically modelled galaxy clusters for cosmological and astrophysical applications |
we revisit the alp miracle scenario where the inflaton and dark matter are unified by a single axion-like particle (alp). we first extend our previous analysis on the inflaton dynamics to identify the whole viable parameter space consistent with the cmb observation. then, we evaluate the relic density of the alp dark m... | the alp miracle revisited |
heavy neutral leptons (hnls) are hypothetical particles predicted by many extensions of the standard model. these particles can, among other things, explain the origin of neutrino masses, generate the observed matter-antimatter asymmetry in the universe and provide a dark matter candidate. the ship experiment will be a... | sensitivity of the ship experiment to heavy neutral leptons |
sterile neutrinos with masses in the kev range are well-motivated extensions to the standard model that could explain the observed neutrino masses while also making up the dark matter (dm) of the universe. if sterile neutrinos are dm then they may slowly decay into active neutrinos and photons, giving rise to the possi... | deep search for decaying dark matter with xmm-newton blank-sky observations |
cosmic reionization by starlight from early galaxies affected their evolution, thereby impacting reionization itself. star formation suppression, for example, may explain the observed underabundance of local group dwarfs relative to n-body predictions for cold dark matter. reionization modelling requires simulating vol... | cosmic dawn (coda): the first radiation-hydrodynamics simulation of reionization and galaxy formation in the local universe |
we report and provide fitting functions for the abundance of dark matter haloes and subhaloes as a function of mass, circular velocity, and redshift from the new bolshoi-planck and multidark-planck λcdm cosmological simulations, based on the planck parameters. we also report halo mass accretion rates and concentrations... | halo and subhalo demographics with planck cosmological parameters: bolshoi-planck and multidark-planck simulations |
we have combined spatially resolved steady-state micro-photoluminescence with time-resolved photoluminescence to investigate the exciton diffusion in a wse2 monolayer encapsulated with hexagonal boron nitride. at 300 k, we extract an exciton diffusion length of lx = 0.36 ± 0.02 μm and an exciton diffusion coefficient o... | exciton diffusion in wse2 monolayers embedded in a van der waals heterostructure |
we consider a simple extension of the standard model (sm) by a complex scalar doublet and a singlet along with three sterile neutrinos. the sterile neutrinos mix with the sm neutrinos to produce three light neutrino states consistent with the oscillation data and three heavy sterile states. the lightest sterile neutrin... | explaining (g -2 )μ,e, the koto anomaly, and the miniboone excess in an extended higgs model with sterile neutrinos |
we propose a novel theory of dark matter (dm) superfluidity that matches the successes of the λ cold dark matter (λ cdm ) model on cosmological scales while simultaneously reproducing the modified newtonian dynamics (mond) phenomenology on galactic scales. the dm and mond components have a common origin, representing d... | theory of dark matter superfluidity |
in the lμ -lτ model 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 z‧ with a mass in the sub-gev range, which is coupled at tree level predominantly to the second and third lepton generations. howev... | probing the muon gμ - 2 anomaly, lμ - lτ gauge boson and dark matter in dark photon experiments |
a search for new phenomena with top quark pairs in final states with one isolated electron or muon, multiple jets, and large missing transverse momentum is performed. signal regions are designed to search for two-, three-, and four-body decays of the directly pair-produced supersymmetric partner of the top quark (stop)... | search for new phenomena with top quark pairs in final states with one lepton, jets, and missing transverse momentum in pp collisions at √{s } = 13 tev with the atlas detector |
we analyze in detail the perturbative decay of the inflaton oscillating about a generic form of its potential v(φ) = φk, taking into account the effects of non-instantaneous reheating. we show that evolution of the temperature as a function of the cosmological scale factor depends on the spin statistics of the final st... | inflaton oscillations and post-inflationary reheating |
optimal extraction of the non-gaussian information encoded in the large-scale structure of the universe lies at the forefront of modern precision cosmology. we propose achieving this task through the use of the wavelet scattering transform (wst), which subjects an input field to a layer of nonlinear transformations tha... | towards an optimal estimation of cosmological parameters with the wavelet scattering transform |
we propose and experimentally demonstrate a method for detection of a light scalar dark matter (dm) field through probing temporal oscillations of fundamental constants in an atomic optical transition. utilizing the quantum information notion of dynamic decoupling (dd) in a tabletop setting, we are able to obtain model... | constraining rapidly oscillating scalar dark matter using dynamic decoupling |
direct-detection experiments sensitive to low-energy electron recoils from sub-gev dark matter interactions will also be sensitive to solar neutrinos via coherent neutrino-nucleus scattering (cns), since the recoiling nucleus can produce a small ionization signal. solar neutrinos constitute both an interesting signal i... | solar neutrinos as a signal and background in direct-detection experiments searching for sub-gev dark matter with electron recoils |
in this review we discuss and compare the usage of simplified models and effective field theory (eft) approaches in dark matter searches. we provide a state of the art description on the subject of efts and simplified models, especially in the context of collider searches for dark matter, but also with implications for... | simplified models vs. effective field theory approaches in dark matter searches |
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