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The twin paradox in relativity revisited

2012/03/20 by Vasant Natarajan, Natarajan, Vasant
Physics and Astronomy · #Classical Physics (physics.class-ph) #Cosmology and Gravitation Theories #FOS: Physical sciences #Popular Physics (physics.pop-ph) #Relativity and Gravitational Theory #Space Science and Extraterrestrial Life #physics.class-ph #physics.pop-ph

paper · pdf · doi:10.48550/arxiv.1204.5651

4 pages, no figures

openalex publication_date 2012/03/20 · arxiv created 2012/07/04 · arxiv updated 2012/07/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The accepted resolution of the twin paradox in relativity states that the age of the inertial twin `jumps' when the traveling twin undergoes his turn-around acceleration. This resolution is based on the use of the equivalent gravitational shift in the frame of the accelerating twin. We use the same analysis to propose a symmetric variant of the problem with the twins experiencing identical acceleration and deceleration phases, but which predicts conflicting results for the age of the other twin. We also propose an unambiguous test of the standard resolution based on the Pound-Rebka experiment.

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