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Superluminal Signaling in the Relationship Between Quantum Mechanics and Special Relativity

Saravan, Mehdi | 2011

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 41208 (04)
  4. University: Sharif University of Technology
  5. Department: Physics
  6. Advisor(s): Golshani, Mehdi
  7. Abstract:
  8. Non-locality was taken into account, in the first place by Bell’s inequalities in Quantum Mechanics. With the emergence of non-locality, it seems that there is a fundamental conflict between the two basic theories of the 20th century, Quantum Mechanics and Relativity. Relativity is constructed upon local descriptions, but there are some hidden non-local features in Quantum Mechanics .Thus, superluminal signaling, which is in conflict with Relativity, has attracted a lot of attention and some ideas were proposed , using this non-local feature, to send superluminal signal. But, the no-signaling theorems claim that none of these features can be used to send superluminal signal. On the other hand, it is claimed that the proofs of these theorems are circular, i.e., they use some assumptions identical to no signaling in Quantum Mechanics. Accordingly, the subject of faster than light signaling via quantum entanglement is still an open problem. In this thesis, we investigate the no-signaling theorems, which provide peaceful co-existence of Quantum Mechanics and Special Relativity, and criticise them. In addition, a new set of experiments is proposed in which the proofs of no signaling theorems are not applicable and show that they are not exhaustive in supporting the no-signaling theorems. Furthermore, our proposed experiment, which is based on non-locality of measurement, indicates the possibility of superluminal signaling
  9. Keywords:
  10. Quantum Entanglement ; Quantum Nonlocality ; Peaceful Coexistence ; No-Signaling Theorem ; Superluminal Signaling

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