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Bergia, S.; Guidone, Mario

doi:10.1023/a:1022132808757

Cited by 17 publications

(18 citation statements)

References 5 publications

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“…Unlike the AVS approach, Selleri approach is not formal but truly physical, or to be exact conceptual, and even philosophical; it is not surprising that such an approach gave rise to a wide and fascinating discussion about the foundations of SRT [15,16,17,18], [5], [22], [11], [23].…”

Section: Between Conventionalism and Realism: Selleri's Approachmentioning

confidence: 99%

“…, where c(ϑ OA ) is the one way velocity of the signal (from O to A) defined by (5): 22 An obvious consequence is that, in general, c (OA) = c (OAO) : this expresses the fact that a generic inertial frame S, different from S 0 , is not optically isotropic for any value of Γ different from the relativistic value Γ = 0.…”

Section: Selleri Synchronizationmentioning

confidence: 99%

“…32 In fact, the re-synchronization defined by the choice e1(β) . = 0 cancels out the term −γ β c x0 appearing in Lorentz time transformation and responsible for the relativity of simultaneity [22], [19]. 33 From an operational viewpoint, the absolute synchronization of an inertial frame S is obtained by setting the reading of a clock in S equal to γ −1 t0 when its spatial position coincides with the one of a clock in S0, whose reading is t0 (obviously, this event is unique in the biography of a clock of S).…”

Section: Selleri "Absolute Simultaneity" In the Full Context Of Srtmentioning

confidence: 99%

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Synchronization Gauges and the Principles of Special Relativity

2004

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The axiomatic bases of Special Relativity Theory (SRT) are thoroughly re-examined from an operational point of view, with particular emphasis on the status of Einstein synchronization in the light of the possibility of arbitrary synchronization procedures in inertial reference frames. Once correctly and explicitly phrased, the principles of SRT allow for a wide range of 'theories' that differ from the standard SRT only for the difference in the chosen synchronization procedures, but are wholly equivalent to SRT in predicting empirical facts. This results in the introduction, in the full background of SRT, of a suitable synchronization gauge. A complete hierarchy of synchronization gauges is introduced and elucidated, ranging from the useful Selleri synchronization gauge (which should lead, according to Selleri, to a multiplicity of theories alternative to SRT) to the more general Mansouri-Sexl synchronization gauge and, finally, to the even more general Anderson-Vetharaniam-Stedman's synchronization gauge. It is showed that all these gauges do not challenge the SRT, as claimed by Selleri, but simply lead to a number of formalisms which leave the geometrical structure of Minkowski spacetime unchanged. Several aspects of fundamental and applied interest related to the conventional aspect of the synchronization choice are discussed, encompassing the issue of the one-way velocity of light on inertial and rotating reference frames, the GPS's working, and the recasting of Maxwell equations in generic synchronizations. Finally, it is showed how the gauge freedom introduced in SRT can be exploited in order to give a clear explanation of the Sagnac effect for counter-propagating matter beams. 1

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Section: Between Conventionalism and Realism: Selleri's Approachmentioning

confidence: 99%

Section: Selleri Synchronizationmentioning

confidence: 99%

Section: Selleri "Absolute Simultaneity" In the Full Context Of Srtmentioning

confidence: 99%

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Synchronization Gauges and the Principles of Special Relativity

2004

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“…The second category attributes the Sagnac effect to the time gap discontinuity that occurs when differential simultaneity is applied to a rotating frame. [68][69][70][71][72][73] We will initially explain the principles in the context of a linear spacetime diagram. A "stationary" LT observer views "moving"-frame time to be shifted over the length of a "moving" platform.…”

Section: The Time Gapmentioning

confidence: 99%

Assessment of the relativistic rotational transformations

Kipreos

Balachandran

2021

Mod. Phys. Lett. A

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Rotational transformations describe relativistic effects in rotating frames. There are four major kinematic rotational transformations: the Langevin metric; Post transformation; Franklin transformation; and the rotational form of the absolute Lorentz transformation. The four transformations exhibit different combinations of relativistic effects and simultaneity frameworks, and generate different predictions for relativistic phenomena. Here, the predictions of the four rotational transformations are compared with recent optical data that has sufficient resolution to distinguish the transformations. We show that the rotational absolute Lorentz transformation matches diverse relativistic optical and non-optical rotational data. These include experimental observations of length contraction, directional time dilation, anisotropic one-way speed of light, isotropic two-way speed of light, and the conventional Sagnac effect. In contrast, the other three transformations do not match the full range of rotating-frame relativistic observations.

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“…Without specifying any further conditions, the proper time difference (14) appears to depend upon β, β + , β − : this means that it does depend, in general, both on the velocity of rotation of the disk and on the velocities of the beams. Let β ′ ± be the dimensionless velocities of the beams as measured in any Minkowski inertial frame, locally co-moving with the rim of the disk, or briefly speaking in any locally co-moving inertial frame (LCIF).…”

Section: The Sagnac Effect For Materials and Light Beamsmentioning

confidence: 99%

A Direct Kinematical Derivation of the Relativistic Sagnac Effect for Light or Matter Beams

Rizzi

Ruggiero

2003

General Relativity and Gravitation

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The Sagnac time delay and the corresponding Sagnac phase shift, for relativistic matter and electromagnetic beams counter-propagating in a rotating interferometer, are deduced on the ground of relativistic kinematics. This purely kinematical approach allows to explain the "universality" of the effect, namely the fact that the Sagnac time difference does not depend on the physical nature of the interfering beams. The only prime requirement is that the counter-propagating beams have the same velocity with respect to any Einstein synchronized local co-moving inertial frame.

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Cited by 17 publications

References 5 publications

Synchronization Gauges and the Principles of Special Relativity

Synchronization Gauges and the Principles of Special Relativity

Assessment of the relativistic rotational transformations

A Direct Kinematical Derivation of the Relativistic Sagnac Effect for Light or Matter Beams

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