Abstract The interaction of neutrinos with ultralight scalar and vector dark matter backgrounds induce a modification the neutrino dispersion relation. effects this are reviewed in framework asymmetric emission from supernova core, and, turn, pulsar kicks. We consider oscillations, focusing particular to active-sterile conversion. induced relation contains term form δ Ω · p̂ , where is related field unit along direction momentum. relative orientation p respect affects mechanism for...

Ultralight particles (${m}_{a}\ensuremath{\sim}{10}^{\ensuremath{-}21}--{10}^{\ensuremath{-}22}\text{ }\text{ }\mathrm{eV}$) with axionlike couplings to other can be candidates for fuzzy dark matter (FDM) if the axion decay constant ${f}_{a}\ensuremath{\sim}{10}^{17}\text{ }\mathrm{GeV}$. If a compact star is immersed in such low-mass axionic potential, it develops long-range field outside star. This radiated away when binary orbit. The orbital period of decays mainly due gravitational wave...

The orbital period of a compact binary system decays mainly due to quadrupole gravitational radiation, which agrees with the observation within 1%. Other types radiation such as ultralight scalar or pseudoscalar and massive vector boson also contribute decay long mass emitted particle is less than frequency system. We obtain an expression energy loss field from neutron star--neutron star star--white dwarf binaries. Because large chemical potential degenerate electrons, stars (NSs) have muon...

Abstract The standard model leptons can be gauged in an anomaly free way by three possible gauge symmetries namely $${L_e-L_\mu }$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msub> <mml:mi>L</mml:mi> <mml:mi>e</mml:mi> </mml:msub> <mml:mo>-</mml:mo> <mml:mi>μ</mml:mi> </mml:mrow> </mml:math> , $${L_e-L_\tau <mml:mi>τ</mml:mi> and $${L_\mu -L_\tau . Of these, forces mediate between the Sun planets change perihelion precession of planetary orbits. It is well...

If an ultralight scalar interacts with the electromagnetic fields of a compact rotating star, then long-range field is developed outside star. The Coulomb-like profile equivalent to effective charge on In binary star system, scalar-induced would result in force between stars, acting as mediator. scalar-photon interactions modify Maxwell's equations for vacuum, resulting modified dispersion relation. This could be observed apparent redshift photons emitted by such sources. also induce...

We study the effect of Spontaneous Lorentz Symmetry Breaking (SLSB) on Primordial Gravitational Waves (PGWs) generated during inflation. The SLSB is induced by a time-like Bumblebee vector field which non-minimally coupled to Ricci tensor in Friedmann-Lema\^itre-Robertson-Walker (FLRW) background. power spectrum and GW amplitude are computed investigate how violation leaves observable imprints. Our analysis contrasts Lorentz-violating cosmology with standard context primordial generation....

We obtain novel constraints on new scalar fields interacting with Standard Model fermions through Lorentz-violating couplings, bridging searches for particles and Lorentz-symmetry tests. These arise from torsion-balance experiments, magnetometer searches, an excessive energy loss in Red Giant stars. Torsion-balance experiments impose stringent constraints, benefitting large macroscopic sources such as the Earth, Moon, Sun. Magnetometer-based which detect pseudo-magnetic spin precession,...

Abstract Dark matter (DM) within the solar system induces deviations in geodetic drift of a gyroscope spin due to its gravitational interaction. Considering constant DM density as minimal scenario, we constrain overdensity Gravity Probe B (GP-B) orbit around Earth and for Earth's Neptune's orbits Sun. The presence electrons gravitating sources test objects introduces an electrophilic scalar-mediated Yukawa potential, which can be probed from measurement well using terrestrial space-based...

Abstract Theories with massive gravitons have peculiarity called the van Dam-Veltman-Zakharov discontinuity in that theory propagator does not go to massless graviton zero mass limit. This results large deviation Newtons law for theories even when vanishes. We test vDVZ single vertex process namely gravitational radiation from a classical source. calculate compact binaries using perturbative Feynman diagram method. perform this calculation Einstein's gravity and verify reproduces quadrupole...

Rotating neutron star or pulsar can be a possible source of pseudo Nambu Goldstone bosons axions which mediate long range axionic hair outside the pulsar. When electromagnetic radiation is emitted from and passes through axion hair, rotates polarization produces birefringence. We obtain angle birefringence due to this as $0.42^\circ$. This result independent rotational frequency, radius pulsar, mass axion, photon coupling constant. value within accuracy measuring linear light $\leq...

Ultralight axion like particles (ALPs) of mass $m_a\in (10^{-21}\rm{eV}-10^{-22}\rm{eV})$ with decay constant $f_a\sim 10^{17}\rm{GeV}$ can be candidates for fuzzy dark matter (FDM). If celestial bodies Earth and Sun are immersed in a low axionic FDM potential if the ALPs have coupling nucleons then coherent oscillation field results long range hair outside bodies. The mediated Yukawa type fifth force is determined by distance between which fixes upper bound as $m_a\lesssim10^{-18}\rm{eV}$....

The geodetic and frame-dragging effects are the direct consequences of spacetime curvature near Earth which can be probed from Gravity probe B (GP-B) satellite. satellite result matches quite well with Einstein's general relativistic result. gyroscope measures contains lots electrons nucleons. Ultralight axions, vector gauge bosons, unparticles interact these nucleons through different spin-dependent spin-independent operators change drift rate gyroscope. Some ultralight particles either...

We consider a general, anomaly free U(1)′ extension of the Standard Model (SM) where neutrino mass is generated at tree level via inverse seesaw mechanism. The model contains three right handed neutrinos, additional singlet fermions, one extra complex scalar and neutral gauge boson (Z′). Instead resorting to specific U(1) extension, we class models by taking charges scalars be parameters. Here, assign pair pseudo-Dirac degenerate sterile neutrinos as Dark Matter (DM) candidates which are...

The pair annihilation of neutrinos $(\nu\overline{\nu}\rightarrow e^+e^-)$ can energize violent stellar explosions such as gamma ray bursts (GRBs). energy in this neutrino heating mechanism be further enhanced by modifying the background spacetime over that Newtonian spacetime. However, one cannot attain maximum GRB $(\sim 10^{52}~\rm{erg})$ either or Schwarzschild and Hartle-Thorne background. On other hand, using modified gravity theories Quintessence field geometries, reached. In paper,...

We analyze the effect of dark large mixing angle (DLMA) solution on effective Majorana mass (${m}_{\ensuremath{\beta}\ensuremath{\beta}}$) governing neutrinoless double beta decay ($0\ensuremath{\nu}\ensuremath{\beta}\ensuremath{\beta}$) in presence a sterile neutrino. consider $3+1$ picture, comprised one additional check that Mikheyev-Smirnov-Wolfenstein resonance Sun can take place DLMA parameter space this scenario. Next, we investigate how values solar ${\ensuremath{\theta}}_{12}$...

An ultralight axion like particle (ALP) can mediate a macroscopic force with long-range monopole-dipole interactions between the Earth and Sun, if is treated as polarized source. Because of geomagnetic field, there exists an estimated ${10}^{42}$ electrons within Earth. These electrons, in state, interact unpolarized nucleons giving rise to potential Sun-Earth system. This phenomenon ultimately influences trajectories light celestial bodies, resulting observable effects such gravitational...

We consider a general, anomaly free U$(1)^\prime$ extension of the Standard Model (SM) where neutrino mass is generated at tree level via inverse seesaw mechanism. The model contains three right handed neutrinos, additional singlet fermions, one extra complex scalar and neutral gauge boson $(Z^\prime)$. Instead resorting to specific $U(1)$ extension, we class models by taking $U(1)^\prime$ charges scalars be parameters. Here, assign pair pseudo-Dirac degenerate sterile neutrinos as Dark...

Ultralight electrophilic scalar field can mediate a long-range force or radiate from pulsar magnetar if the has coupling with Goldreich-Julian charge density net electron of star. The interaction profile results in spatial variation mass. A induced magnetic is created due to such interaction. mass cases constrained by radius also binary system an isolated star less than orbital frequency and spin respectively. radiation contribute period loss systems spin-down. Comparing existing projected...

The high speeds seen in rapidly rotating pulsars after supernova explosions present a longstanding puzzle astrophysics. Numerous theories have been suggested over the years to explain this sudden &amp;quot;kick&amp;quot; imparted neutron star, yet each comes with its own set of challenges and limitations. Key explanations for pulsar kicks include hydrodynamic instabilities supernovae, anisotropic neutrino emission, asymmetries magnetic field, binary system disruption, physics beyond Standard...

The high speeds seen in rapidly rotating pulsars after supernova explosions present a longstanding puzzle astrophysics. Numerous theories have been suggested over the years to explain this sudden "kick" imparted neutron star, yet each comes with its own set of challenges and limitations. Key explanations for pulsar kicks include hydrodynamic instabilities supernovae, anisotropic neutrino emission, asymmetries magnetic field, binary system disruption, physics beyond Standard Model. Unraveling...

Dark matter (DM) within the solar system induces deviations in geodetic drift of gyroscope spin due to its gravitational interaction. Assuming a constant DM density as minimal scenario, we constrain overdensity Gravity Probe B (GP-B) orbit and project limits for Earth's Neptune's orbits around Sun. The presence electrons gravitating sources test objects introduces scalar-mediated Yukawa potential, which can be probed using terrestrial space--based precision clocks. We derive projected...