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Relativity principles in 1+1 dimensions and differential aging reversal

E. Minguzzi
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Abstract

We study the behavior of clocks in 1+1 spacetime assuming the relativity principle, the principle of constancy of the speed of light and the clock hypothesis. These requirements are satisfied by a class of Finslerian theories parametrized by a real coefficient $\beta$, special relativity being recovered for $\beta=0$. The effect of differential aging is studied for the different values of $\beta$. Below the critical values $|\beta| =1/c$ the differential aging has the usual direction - after a round trip the accelerated observer returns younger than the twin at rest in the inertial frame - while above the critical values the differential aging changes sign. The non-relativistic case is treated by introducing a formal analogy with thermodynamics.

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E. Minguzzi. 2004-12-01. Relativity principles in 1+1 dimensions and differential aging reversal. https://doi.org/10.1007/s10702-006-0799-6

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