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In order to facilitate the identification of possible new physics signatures in neutrino telescopes, such as neutrinos from the annihilation of neutralinos or decaying relics, it is essential to gain full control over the astrophysical…

Astrophysics · Physics 2008-11-26 Karl Mannheim

A key question in cosmology is whether massive neutrinos exist on cosmic scales. Current cosmological observations have severely compressed the viable range for neutrino masses and even prefer phenomenologically an effective negative mass.…

Cosmology and Nongalactic Astrophysics · Physics 2025-03-28 Deng Wang

Matter effects in neutrino propagation translate into effective parameters for the oscillation and fake CP- and CPT-odd quantities, even in a scenario, such as $\Delta_{12}=0$, where no genuine CP violation is present. This fact seems to…

High Energy Physics - Phenomenology · Physics 2014-11-17 M. C. Banuls , G. Barenboim , J. Bernabeu

We quantify the information content of the non-linear matter power spectrum, the halo mass function, and the void size function, using the Quijote $N$-body simulations. We find that these three statistics exhibit very different degeneracies…

Environmental decoherence of oscillating neutrinos of strength $\Gamma = (2.3 \pm 1.1) \times 10^{-23}$ GeV can explain how maximal $\theta_{23}$ mixing observed at 295 km by T2K appears to be non-maximal at longer baselines. As shown…

High Energy Physics - Phenomenology · Physics 2017-12-06 João A. B. Coelho , W. Anthony Mann

With the advent of precision data, cosmology has become an extremely powerful tool for probing particle physics. The prime example of this is the cosmological bound on light neutrino masses. Here I review the current status of cosmological…

High Energy Physics - Phenomenology · Physics 2017-08-23 Steen Hannestad

The relic neutrinos are expected to acquire a bulk relative velocity with respect to the dark matter at low redshifts, and neutrino wakes are expected to develop downstream of the dark matter halos. We propose a method of measuring the…

Cosmology and Nongalactic Astrophysics · Physics 2016-05-11 Hong-Ming Zhu , Ue-Li Pen , Xuelei Chen , Derek Inman

We show that galaxy redshift surveys sensitively probe the neutrino mass, with eV mass neutrinos suppressing power by a factor of two. The Sloan Digital Sky Survey can potentially detect $N$ nearly degenerate massive neutrino species with…

Astrophysics · Physics 2009-10-07 Wayne Hu , Daniel J. Eisenstein , Max Tegmark

Large future galaxy cluster surveys, combined with cosmic microwave background observations, can achieve a high sensitivity to the masses of cosmologically important neutrinos. We show that a weak lensing selected sample of ~100,000…

Astrophysics · Physics 2011-05-12 Sheng Wang , Zoltan Haiman , Wayne Hu , Justin Khoury , Morgan May

I briefly review cosmological bounds on neutrino masses and the underlying gravitational physics at a level appropriate for readers outside the field of cosmology. For the case of three massive neutrinos with standard model freezeout, the…

High Energy Physics - Phenomenology · Physics 2009-10-07 Max Tegmark

We study neutrino masses and mixing in Supersymmetric Models without $R$ parity and with generic soft Supersymmetry breaking terms. Neutrinos acquire mass from various sources: tree level neutrino--neutralino mixing, loop effects and…

High Energy Physics - Phenomenology · Physics 2009-10-28 Francesca M. Borzumati , Yuval Grossman , Enrico Nardi , Yosef Nir

We derive upper limits on the sum of neutrino masses from an updated combination of data from Cosmic Microwave Background experiments and Galaxy Redshifts Surveys. The results are discussed in the context of three-flavor neutrino mixing and…

Astrophysics · Physics 2009-10-07 A. Melchiorri , G. L. Fogli , E. Lisi , A. Marrone , A. Palazzo , P. Serra , J. I. Silk

There is renewed attention to whether we can observe the decoherence effect in neutrino oscillation due to the separation of wave packets with different masses in near-future experiments. As a contribution to this endeavor, we extend the…

High Energy Physics - Phenomenology · Physics 2023-10-18 Haruhi Mitani , Kin-ya Oda

We study the possibility for a measurement of neutrino mass using weak gravitational lensing. The presence of non-zero mass neutrinos leads to a suppression of power at small scales and reduces the expected weak lensing signal. The…

Astrophysics · Physics 2011-05-23 Asantha R. Cooray

Neutrino mixing lead to a non zero contribution to the cosmological constant. We consider non renormalization $1/M_{x}$ interaction term as a perturbation of the neutrino mass matrix. We find that for the degenerate neutrino mass spectrum.…

High Energy Physics - Phenomenology · Physics 2009-11-04 Bipin Singh Koranga

Measurements of gravitational lensing of the cosmic microwave background (CMB) hold the promise of yielding unique insights into cosmology at high redshift. Uncertainties due to baryonic effects associated with galaxy formation and…

Cosmology and Nongalactic Astrophysics · Physics 2020-11-13 Eegene Chung , Simon Foreman , Alexander van Engelen

While it is established that the effect of neutrinos on the evolution of cosmic structure is small, the upper limits derived from large-scale structure could help significantly to constrain the absolute scale of the neutrino masses. Current…

Astrophysics · Physics 2008-11-26 Ofer Lahav , Oystein Elgaroy

Physics beyond the standard model might imply the cosmological production of particles with grand unification scale energies. Nucleons and gamma-rays from such processes are candidates for the cosmic rays observed beyond 100 EeV [10**(20)…

Astrophysics · Physics 2009-10-28 Guenter Sigl , Sangjin Lee , David N. Schramm , Paolo Coppi

There are three observables related to neutrino mass, namely the kinematic mass in direct searches, the effective mass in neutrino-less double beta decay, and the sum of neutrino masses in cosmology. In the limit of exactly degenerate…

High Energy Physics - Phenomenology · Physics 2010-05-12 Werner Rodejohann

Recent works combining neutrino oscillation and cosmological data to determine the neutrino hierarchy found a range of odds in favour of the normal hierarchy. These results arise from differing approaches to incorporating prior knowledge…

Cosmology and Nongalactic Astrophysics · Physics 2020-04-15 Constance Mahony , Boris Leistedt , Hiranya V. Peiris , Jonathan Braden , Benjamin Joachimi , Andreas Korn , Linda Cremonesi , Ryan Nichol