scholarly journals Time-varying neutrino mass from a supercooled phase transition: Current cosmological constraints and impact on the Ωm−σ8 plane

2019 ◽  
Vol 99 (2) ◽  
Author(s):  
Christiane S. Lorenz ◽  
Lena Funcke ◽  
Erminia Calabrese ◽  
Steen Hannestad
Keyword(s):  
Phase Transition ◽  
Neutrino Mass ◽  
Time Varying ◽  
Cosmological Constraints ◽  
Transition Current

scholarly journals Phase transition of the susceptible-infected-susceptible dynamics on time-varying configuration model networks

2018 ◽  
Vol 97 (2) ◽  
Author(s):  
Guillaume St-Onge ◽  
Jean-Gabriel Young ◽  
Edward Laurence ◽  
Charles Murphy ◽  
Louis J. Dubé
Keyword(s):  
Phase Transition ◽  
Configuration Model ◽  
Time Varying ◽  
Model Networks

Critical Phase-Transition Current in Niobium Nitride Thin Films

2018 ◽  
Vol 60 (11) ◽  
pp. 2287-2290
Author(s):  
M. A. Vasyutin ◽  
N. D. Kuz’michev ◽  
D. A. Shilkin
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
Niobium Nitride ◽  
Transition Current ◽  
Critical Phase

scholarly journals Ripples in spacetime from broken supersymmetry

2021 ◽  
Vol 2021 (2) ◽  
Author(s):  
Nathaniel Craig ◽  
Noam Levi ◽  
Alberto Mariotti ◽  
Diego Redigolo
Keyword(s):  
Phase Transition ◽  
Phase Transitions ◽  
Susy Breaking ◽  
Low Energy ◽  
Temperature Expansion ◽  
Cosmological Constraints ◽  
First Order ◽  
Hidden Sector ◽  
Pass Through ◽  
First Order Phase

Abstract We initiate the study of gravitational wave (GW) signals from first-order phase transitions in supersymmetry-breaking hidden sectors. Such phase transitions often occur along a pseudo-flat direction universally related to supersymmetry (SUSY) breaking in hidden sectors that spontaneously break R-symmetry. The potential along this pseudo-flat direction imbues the phase transition with a number of novel properties, including a nucleation temperature well below the scale of heavy states (such that the temperature dependence is captured by the low-temperature expansion) and significant friction induced by the same heavy states as they pass through bubble walls. In low-energy SUSY-breaking hidden sectors, the frequency of the GW signal arising from such a phase transition is guaranteed to lie within the reach of future interferometers given existing cosmological constraints on the gravitino abundance. Once a mediation scheme is specified, the frequency of the GW peak correlates with the superpartner spectrum. Current bounds on supersymmetry are compatible with GW signals at future interferometers, while the observation of a GW signal from a SUSY-breaking hidden sector would imply superpartners within reach of future colliders.

scholarly journals Weak lensing minima and peaks: Cosmological constraints and the impact of baryons

2020 ◽  
Vol 495 (3) ◽  
pp. 2531-2542 ◽  
Author(s):  
William R Coulton ◽  
Jia Liu ◽  
Ian G McCarthy ◽  
Ken Osato
Keyword(s):  
Power Spectrum ◽  
Neutrino Mass ◽  
Matter Density ◽  
Weak Lensing ◽  
Cosmological Constraints ◽  
Credible Intervals ◽  
Hydrodynamical Simulations ◽  
Non Gaussian ◽  
The Impact

ABSTRACT We present a novel statistic to extract cosmological information in weak lensing data: the lensing minima. We also investigate the effect of baryons on cosmological constraints from peak and minimum counts. Using the MassiveNuS simulations, we find that lensing minima are sensitive to non-Gaussian cosmological information and are complementary to the lensing power spectrum and peak counts. For an LSST-like survey, we obtain $95{{\ \rm per\ cent}}$ credible intervals from a combination of lensing minima and peaks that are significantly stronger than from the power spectrum alone, by $44{{\ \rm per\ cent}}$, $11{{\ \rm per\ cent}}$, and $63{{\ \rm per\ cent}}$ for the neutrino mass sum ∑mν, matter density Ωm, and amplitude of fluctuation As, respectively. We explore the effect of baryonic processes on lensing minima and peaks using the hydrodynamical simulations BAHAMAS and Osato15. We find that ignoring baryonic effects would lead to strong (≈4σ) biases in inferences from peak counts, but negligible (≈0.5σ) for minimum counts, suggesting lensing minima are a potentially more robust tool against baryonic effects. Finally, we demonstrate that the biases can in principle be mitigated without significantly degrading cosmological constraints when we model and marginalize the baryonic effects.

Sign in / Sign up

Export Citation Format

Share Document