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Ultra-light bosons, naturally appearing in well-motivated extensions to the Standard Model, can constitute all the dark matter. Models with particle mass close to the smallest phenomenologically allowed exhibit coherent field configurations…

High Energy Physics - Phenomenology · Physics 2025-07-11 Diego Blas , Silvia Gasparotto , Rodrigo Vicente

Dark matter remains one of the most profound and unresolved mysteries in modern physics. To unravel its nature, numerous haloscope experiments have been implemented across various mass ranges. However, very few haloscope experiments…

Cosmology and Nongalactic Astrophysics · Physics 2026-02-04 Guoqing Wei , Diguang Wu , Runqi Kang , Qingning Jiang , Man Jiao , Xing Rong , Jiangfeng Du

We propose a novel antiparticle detector. The gaseous antiparticle spectrometer (GAPS) effects particle identification through the characteristic X-rays emitted by antiparticles when they form exotic atoms in gases. GAPS obtains…

We search for indirect signals of $\mathscr{O}$(keV) dark matter annihilating or decaying into $\mathscr{O}$(eV) dark photons. These dark photons will be highly boosted and have decay lengths larger than the Milky Way, and can be absorbed…

High Energy Physics - Phenomenology · Physics 2024-05-24 Michael L. Graesser , R. Andrew Gustafson , Kate Hildebrandt , Varun Mathur , Ian M. Shoemaker

Revealing the essence of dark matter (DM) and dark energy is essential for understanding our universe. Ultralight (rest energy $<$10 eV) bosonic particles, including pseudoscalar axions and axion-like particles (ALPs) have emerged among…

High Energy Physics - Experiment · Physics 2024-07-10 Xiaofei Huang , Xiaolin Ma , Lei Cong , Wei Ji , Jia Liu , Wei Quan , Kai Wei

The GLAST LAT Collaboration is one among several experimental groups, covering a wide range of approaches, pursuing the search for the nature of dark matter. The GLAST LAT has the unique ability to find new sources of high energy gamma…

Astrophysics · Physics 2008-11-26 Lawrence Wai , GLAST LAT Collaboration

Multimessenger astronomy incorporating gravitational radiation is a new and exciting field that will potentially provide significant results and exciting challenges in the near future. With advanced interferometric gravitational wave…

General Relativity and Quantum Cosmology · Physics 2019-08-13 N. L. Christensen

We suggest a novel experimental method to search for axion dark matter with an optical ring cavity. Our cavity measures the difference of the resonant frequencies between two circular-polarizations of the laser beam. Its technical design…

Instrumentation and Detectors · Physics 2018-11-30 Ippei Obata , Tomohiro Fujita , Yuta Michimura

Dark photons, as a minimal extension of the Standard Model through an additional Abelian gauge group, may propagate relativistically across the galaxy, originating from dark matter decay or annihilation, thereby contributing to a galactic…

We investigated the estimation of an unknown Gaussian process (containing displacement, squeezing and phase-shift) applied to a matter system. The state of the matter system is not directly measured; instead, we measure an optical mode…

Quantum Physics · Physics 2017-08-09 László Ruppert , Radim Filip

The detection of exotic cosmic rays due to pair annihilation of dark matter particles in the Milky Way halo is a viable techniques to search for supersymmetric dark matter candidates. The study of the spectrum of gamma-rays, antiprotons and…

In this contribution I review the present status and discuss some prospects for indirect detection of dark matter with gamma-rays. Thanks to the Fermi Large Area Telescope, searches in gamma-rays have reached sensitivities that allow to…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-11 Jan Conrad

We propose a novel idea to detect a dark photon in gravitational wave experiments. Our setups are capable of performing the whole process of dark photon production, its decay products, and new physics signal discovery. This mini-LHC is…

High Energy Physics - Phenomenology · Physics 2023-04-18 M. Afif Ismail , Chrisna Setyo Nugroho , Henry Tsz-King Wong

There exists considerable interest in dark matter candidates that can reduce cosmological structure at sub-galactic scales through a suppression of the power spectrum of primordial perturbations as well as have a primordial velocity…

Cosmology and Nongalactic Astrophysics · Physics 2009-03-12 Kevork N. Abazajian

Cosmological mechanisms that yield ultralight dark matter are insensitive to the intrinsic parity of a bosonic dark matter candidate, but that same quantity plays a crucial role in a direct detection experiment. The modification of…

High Energy Physics - Phenomenology · Physics 2021-09-20 Christopher M. Donohue , Susan Gardner , Wolfgang Korsch

The response of Michelson interferometers to weak plane gravitational waves is computed at one order of accuracy beyond the eikonal equation. The modulation of the electromagnetic field amplitude and polarisation are taken into account by…

General Relativity and Quantum Cosmology · Physics 2021-08-12 Thomas Mieling

We present a new module of micrOMEGAs devoted to the computation of indirect signals from dark matter annihilation in any new model with a stable weakly interacting particle. The code provides the mass spectrum, cross-sections, relic…

High Energy Physics - Phenomenology · Physics 2011-01-17 G. Belanger , F. Boudjema , P. Brun , A. Pukhov , S. Rosier-Lees , P. Salati , A. Semenov

An experiment is described to detect dark matter axions trapped in the halo of our galaxy. Galactic axions are converted into microwave photons via the Primakoff effect in a static background field provided by a superconducting magnet. The…

A novel method is proposed to measure the refractive indices (RIs) of the materials of different transparent solid state media. To exploit the advantage of non-contact measurement laser beam interferometry is used as an effective technique…

Physics Education · Physics 2024-06-19 Arnab Pal , Kriti R. Sahu , Pradipta Panchadhyayee , Debapriyo Syam

Dark matter may consist of weakly interacting elementary particles or of macroscopic compact objects. We show that the statistics of the gravitational lensing of high redshift supernovae strongly discriminate between these two classes of…

Astrophysics · Physics 2015-06-24 R. Benton Metcalf , Joseph Silk