299 citations · 984 across the 35 of their papers we have counts for
31 papers · 1 filter
The renormalization-group running of neutrino mixing is undetectable
Gabriela Barenboim, Mauricio Bustamante, Qinrui Liu
Quantum corrections make the parameters of a theory depend on an arbitrary renormalization scale, . The renormalization-group (RG) running of neutrino masses and mixing is a sta…
Stasis Combs: Gravitational-Wave Signatures of Recurrent Cosmological Stasis
Gabriela Barenboim, Anne-Katherine Burns
Cosmological stasis can recur multiple times, and each occurrence imprints a characteristic feature on the inflationary gravitational wave background (IGWB). We extend the single-e…
Detecting Cosmological Stasis with Future Gravitational Wave Observatories
Gabriela Barenboim, Anne-Katherine Burns
We map the observational predictions of cosmological stasis in the inflationary gravitational wave background onto the sensitivity bands of current and planned gravitational wave d…
Gravitational Wave Signatures of Cosmological Stasis: A Unified Spectral Template
Gabriela Barenboim, Anne-Katherine Burns
Proposed in 2022 by Dienes et al., stasis is a dynamical fixed point in the early universe in which the equation of state, , is fixed at a constant value. In this study we sho…
When CPT Violation Hides in Plain Sight: How CP Measurements Are Compromised and How to Fix Them
Miaochen Jin, Gabriela Barenboim, Carlos A. Argüelles +2
The extraction of the leptonic charge-parity (CP)-violating phase from long-baseline neutrino oscillation experiments rests on the assumption of charge-parity-time (CP…
Are neutrinos Majorana? Fixed-target and high-energy astrophysical searches decide
Gabriela Barenboim, Mauricio Bustamante, Qinrui Liu
Determining whether the neutrino is a Dirac or Majorana fermion remains a fundamental open question. Conventional searches rely on neutrinoless double beta decay, but this electron…
Scale-Invariant Open Quantum Systems
Carlos Argüelles, Gabriela Barenboim, Gonzalo Herrera +2
We develop a complete theoretical framework for open quantum systems coupled to scale-invariant environments. We show that such environments are universally described by unparticle…
Universal Description of Decoherence in Scale-Invariant Environments
Carlos Argüelles, Gabriela Barenboim, Gonzalo Herrera +2
When a quantum system couples to a scale-invariant environment, what form must its decoherence take? We prove that the answer is unique: under locality, Lorentz invariance, unitari…
Astrophysical bounds on the high-energy evolution of neutrino mixing
Mauricio Bustamante, Qinrui Liu, Gabriela Barenboim
While conventional oscillation experiments measure neutrino mixing parameters with high precision, these measurements are strictly confined to sub-TeV scales. At higher energies, r…
Measuring neutrino mixing above 1 TeV with astrophysical neutrinos
Mauricio Bustamante, Qinrui Liu, Gabriela Barenboim
We assess the potential for measuring neutrino mixing parameters at energies above 1~TeV, for the first time, using the flavor composition of TeV--PeV astrophysical neutrinos, i.e.…
Fifty shades of grayness: parametrizations of spectral distortions and applications in cosmology
Gabriela Barenboim, Julien Froustey, Cyril Pitrou +1
Thermal distribution functions can only be of the Fermi-Dirac or Bose-Einstein types, whereas distorted spectra encompass any possible deviations from these shapes. It is fruitful…
Gravitational Wave Signatures from Lepton Number Breaking Phase Transitions with Flat Potentials
Gabriela Barenboim, Yeji Park, Liliana Velasco-Sevilla
Extensions of the Standard Model typically contain ``flaton fields" defined as fields with large vacuum expectation values and almost flat potentials where scalar self-coupling is…
Primordial neutrinos fade to gray: constraints from cosmological observables
Gabriela Barenboim, Julien Froustey, Cyril Pitrou +1
We investigate the effect of potentially large distortions of the relic neutrino spectra on cosmological observables. To that end, we consider a phenomenological model of "gray" sp…
Neutrino Theory in the Precision Era
Asmaa Abada, Gabriela Barenboim, Toni Bertólez-Martínez +76
This document summarises discussions on future directions in theoretical neutrino physics, which are the outcome of a neutrino theory workshop held at CERN in February 2025. The st…
Big Bang Nucleosynthesis as a probe of non-standard neutrino interactions and non-unitary three-neutrino mixing
Gabriela Barenboim, Stefano Gariazzo, Alberto Sánchez-Vargas
In this work we investigate the impact of two phenomenological Beyond the Standard Model (BSM) scenarios concerning the role of neutrinos in the early universe: non-standard neutri…
Exploring the Interference between the Atmospheric and Solar Neutrino Oscillation Sub-Amplitudes
Gabriela Barenboim, Stephen J. Parke
The interference between the atmospheric and solar neutrino oscillation sub-amplitudes is said to be responsible for CP violation (CPV) in neutrino appearance channels. More precis…
Direct neutralino searches in the NMSSM with gravitino LSP in the degenerate scenario
Gabriela Barenboim, Grigoris Panotopoulos
In the present work a two-component dark matter model is studied adopting the degenerate scenario in the R-parity conserving NMSSM. The gravitino LSP and the neutralino NLSP are ex…
Quantum decoherence and neutrino data
G. Barenboim, N. E. mavromatos, S. Sarkar +1
In this work we perform global fits of microscopic decoherence models of neutrinos to all available current data, including LSND and KamLAND spectral distortion results. In previou…
A model of CPT violation for neutrinos
G. Barenboim, J. Lykken
Any local relativistic quantum field theory of Dirac-Weyl fermions conserves CPT. Here we examine whether a simple nonlocal field theory can violate CPT. We construct a new relativ…
E1 Working Group Summary: Neutrino Factories and Muon Colliders
D. Harris
We are in the middle of a time of exciting discovery, namely that neutrinos have mass and oscillate. In order to take the next steps to understand this potential window onto what w…
Neutrinos as the messengers of CPT violation
G. Barenboim, L. Borissov, J. Lykken +1
CPT violation has the potential to explain all three existing neutrino anomalies without enlarging the neutrino sector. CPT violation in the Dirac mass terms of the three neutrino…
Combining LSND and Atmospheric Anomalies in a Three-Neutrino Picture
G. Barenboim, A. Dighe, S. Skadhauge
We investigate the three-neutrino mixing scheme for solving the atmospheric and LSND anomalies. We find the region in the parameter space that provides a good fit to the LSND and t…
Flavour Violation in SUSY SU(5) GUT at Large tan beta
G. Barenboim, K. Huitu, M. Raidal
We study flavour violation in the minimal SUSY SU(5) GUT assuming all the third generation Yukawa couplings to be due to the renormalizable physics above GUT scale. At large $\tanβ…
Tau neutrinos from muon storage rings
G. Barenboim, F. Scheck
Charged tau leptons emerging in a long baseline experiment with a muon storage ring and a far-away detector will positively establish neutrino oscillations. We study the conversion…