105 citations · 718 across the 24 of their papers we have counts for
24 papers
Bose-enhanced Neutrino Decays in a Thermal Medium
Yuber F. Perez-Gonzalez, Manibrata Sen, Walter Tangarife
We compute the decay width of neutrinos in a thermal medium using finite-temperature quantum field theory, focusing on non-standard decays into lighter neutrinos and a scalar or li…
Heavy dark matter in rapidly evolving massive stars
Sandra Robles, Walter Tangarife, Giorgio Busoni
We study the impact of heavy dark matter (DM) captured in massive stars via scattering(s) with the star constituents. We focus on the first stars and use stellar evolution simulati…
The neutrino force in neutrino backgrounds: Spin dependence and parity-violating effects
Mitrajyoti Ghosh, Yuval Grossman, Walter Tangarife +2
The neutrino force results from the exchange of a pair of neutrinos. A neutrino background can significantly influence this force. In this work, we present a comprehensive calculat…
Fermion pair radiation from accelerating classical systems
Margarita Gavrilova, Mitrajyoti Ghosh, Yuval Grossman +2
Accelerating classical systems that couple to a fermion-antifermion pair at the microscopic level can radiate pairs of fermions and lose energy in the process. In this work, we der…
Neutrino forces in neutrino backgrounds
Mitrajyoti Ghosh, Yuval Grossman, Walter Tangarife +2
The Standard Model predicts a long-range force, proportional to , between fermions due to the exchange of a pair of neutrinos. This quantum force is feeble and has not b…
Core-collapse Supernova Constraint on the Origin of Sterile Neutrino Dark Matter via Neutrino Self-interactions
Yu-Ming Chen, Manibrata Sen, Walter Tangarife +2
Novel neutrino self-interaction can open up viable parameter space for the relic abundance of sterile-neutrino dark matter (SDM). In this work, we constrain the relic target usi…
Dirac dark matter, neutrino masses, and dark baryogenesis
Diego Restrepo, Andrés Rivera, Walter Tangarife
We present a gauged baryon number model as an example of models where all new fermions required to cancel out the anomalies help to solve phenomenological problems of the standard…
Neutrino Self-Interactions: A White Paper
Jeffrey M. Berryman, Nikita Blinov, Vedran Brdar +31
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…
Origin of Sterile Neutrino Dark Matter via Vector Secret Neutrino Interactions
Kevin J. Kelly, Manibrata Sen, Walter Tangarife +1
Secret neutrino interactions can play an essential role in the origin of dark matter. We present an anatomy of production mechanisms for sterile neutrino dark matter, a keV-scale g…
Probing the two-neutrino exchange force using atomic parity violation
Mitrajyoti Ghosh, Yuval Grossman, Walter Tangarife
The exchange of two neutrinos at one loop leads to a long-range parity-violating force between fermions. We explore the two-neutrino force in the backdrop of atomic physics. We poi…
Dodelson-Widrow Mechanism In the Presence of Self-Interacting Neutrinos
André de Gouvêa, Manibrata Sen, Walter Tangarife +1
keV-scale gauge-singlet fermions, allowed to mix with the active neutrinos, are elegant dark matter (DM) candidates. They are produced in the early universe via the Dodelson-Widrow…
Singlet-Doublet Dirac Dark Matter and Neutrino Masses
Diego Restrepo, Andrés Rivera, Walter Tangarife
We examine an extension of the Standard Model that addresses the dark matter puzzle and generates Dirac neutrinos masses through the radiative seesaw mechanism. The new field conte…
Accretion of Dissipative Dark Matter onto Active Galactic Nuclei
Nadav Joseph Outmezguine, Oren Slone, Walter Tangarife +2
We examine the possibility that accretion of Dissipative Dark Matter (DDM) onto Active Galactic Nuclei (AGN) contributes to the growth rate of Super Massive Black Holes (SMBHs). Su…
Dynamics of Relaxed Inflation
Walter Tangarife, Kohsaku Tobioka, Lorenzo Ubaldi +1
The cosmological relaxation of the electroweak scale has been proposed as a mechanism to address the hierarchy problem of the Standard Model. A field, the relaxion, rolls down its…
Relaxed Inflation
Walter Tangarife, Kohsaku Tobioka, Lorenzo Ubaldi +1
We present an effective model where the inflaton is a relaxion that scans the Higgs mass and sets it at the weak scale. The dynamics consist of a long epoch in which inflation is d…
Extending the scope of holographic mutual information and chaotic behavior
Nilanjan Sircar, Jacob Sonnenschein, Walter Tangarife
We extend the use of holography to investigate the scrambling properties of various physical systems. Specifically, we consider: (i) non-conformal backgrounds of black branes,…
Radiative neutrino masses in the singlet-doublet fermion dark matter model with scalar singlets
Diego Restrepo, Andrés Rivera, Marta Sánchez-Peláez +2
When the singlet-doublet fermion dark matter model is extended with additional --odd real singlet scalars, neutrino masses and mixings can be generated at one-loop level. In t…
Holographic Schwinger effect in de Sitter space
Willy Fischler, Phuc H. Nguyen, Juan F. Pedraza +1
Using the AdS/CFT correspondence, we construct the holographic dual of a tunneling instanton describing Schwinger pair creation in de Sitter space. Our approach allows us to extrac…
Supersymmetric Partially Interacting Dark Matter
Willy Fischler, Dustin Lorshbough, Walter Tangarife
We present a model of partially interacting dark matter (PIDM) within the framework of supersymmetry with gauge mediated symmetry breaking. Dark sector atoms are produced through A…
Implications Of A Dark Sector U(1) For Gamma Ray Bursts
Tom Banks, Willy Fischler, Dustin Lorshbough +1
We discuss the implications for gamma ray burst studies, of a dark unbroken sector that couples predominantly through gravity to the visible sector. The dominant dark matt…
Fluctuation and dissipation in de Sitter space
Willy Fischler, Phuc H. Nguyen, Juan F. Pedraza +1
In this paper we study some thermal properties of quantum field theories in de Sitter space by means of holographic techniques. We focus on the static patch of de Sitter and assume…
Vector-like Fields, Messenger Mixing and the Higgs mass in Gauge Mediation
Willy Fischler, Walter Tangarife
In order to generate, in the context of gauge mediation, a Higgs mass around 126 GeV that avoids the little hierarchy problem, we explore a set of models where the messengers are d…
A Singlet Extension of the MSSM with a Dark Matter Portal
Alejandro de La Puente, Walter Tangarife
The minimal extension of the MSSM (NMSSM) has been widely studied in the search for a natural solution to the problem. In this work, we consider a variation of the NMSSM where…
Strong Subadditivity, Null Energy Condition and Charged Black Holes
Elena Caceres, Arnab Kundu, Juan F. Pedraza +1
Using the Hubeny-Rangamani-Takayanagi (HRT) conjectured formula for entanglement entropy in the context of the AdS/CFT correspondence with time-dependent backgrounds, we investigat…