Swarthmore College

May 6, 2024 | link.aps.org | Tristan Smith |Swarthmore College |Vivian Poulin |Laboratoire Univers

Article Text (Subscription Required) Click to ExpandReferences (Subscription Required) Click to ExpandIssueVol. 109, Iss. 10 — 15 May 2024Access OptionsBuy Article »Log in with individual APS Journal Account »Log in with a username/password provided by your institution »Get access through a U.S. public or high school library »Article part of CHORUSAccepted manuscript will be available starting 6 May 2025. Download & Share××

Mar 26, 2024 | link.aps.org | Alexander C. Sobotka |Adrienne L. Erickcek |Tristan Smith |Swarthmore College

We derive constraints on the injection of free-streaming dark radiation after big bang nucleosynthesis by considering the decay of a massive hidden sector particle into dark radiation. Such a scenario has the potential to alleviate the Hubble tension by introducing a new energy component to the evolution of the early Universe.

Feb 29, 2024 | academic.oup.com | Swarthmore College

Gender and racial pay penalties are well-known: women (of all races) and people of color (of all genders) earn less, on average, even when they gain access to occupations historically reserved for White men. Studies of social mobility show that people from working-class backgrounds in the US have also been excluded from top professional and managerial occupations. But do working-class-origin people who attain top US jobs face a class-origin pay penalty?

Jan 2, 2024 | cambridge.org | Warren Snead |Swarthmore College

Hostname: page-component-797576ffbb-xmkxbTotal loading time: 0Render date: 2024-01-02T09:15:30.673ZHas data issue: falseFeature Flags: {"corePageComponentGetUserInfoFromSharedSession": true,"coreDisableEcommerce": false,"useRatesEcommerce": true}hasContentIssue false Published online by Cambridge University Press: 02 January 2024 Type Articles Information Law & Social Inquiry ,First View , pp.

Dec 18, 2023 | link.aps.org | Tristan Smith |Swarthmore College |John Giblin |Kenyon College

We study the nonlinear effects of minimally coupled, massless, cosmological scalar fields on the cosmic microwave background (CMB). These fields can exhibit postrecombination parametric resonance and subsequent nonlinear evolution leading to novel contributions to the gravitational potential. We compute the resulting contributions to the CMB temperature anisotropies through the time variation of the gravitational potential (i.e., the integrated Sachs-Wolfe (ISW) effect).