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- W1567438678 abstract "Consider a class of relativistic rotators described by position and a single null direction. Such a rotator is called fundamental if both its Casimir invariants are intrinsic dimensional parameters independent of arbitrary constants of motion. As shown by Staruszkiewicz, only one rotator with this property exists (its partner with similar property can be excluded on physical grounds). We obtain a general solution to equations of free motion of the fundamental relativistic rotator in a covariant manner. Surprisingly, this motion is not entirely determined by initial conditions but depends on one arbitrary function of time, which specifies rotation of the null direction in the centre of momentum frame. This arbitrariness is in manifest contradiction with classical determinism. In this sense the isolated fundamental relativistic rotator is pathological as a dynamical system. To understand why this is so, we study the necessary condition for the uniqueness of the related Cauchy problem. It turns out that the fundamental relativistic rotator (together with its partner) can be uniquely characterized by violating this condition in the considered class of rotators." @default.
- W1567438678 created "2016-06-24" @default.
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- W1567438678 date "2009-02-24" @default.
- W1567438678 modified "2023-09-27" @default.
- W1567438678 title "On the nonuniqueness of free motion of the fundamental relativistic rotator" @default.
- W1567438678 hasPublicationYear "2009" @default.
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