TY - JOUR
T1 - Sending Signals to Space-Like Separated Regions
AU - Aharonov, Y.
AU - Vaidman, L.
N1 - Funding Information:
This research was supported in part by grant 471/98 of the Basic Research Foundation (administered by the Israel Academy of Sciences and Humanities), the NSF grant PHY-9971005, and the EPS grant of Research Council GR/N33058.
PY - 2001
Y1 - 2001
N2 - Two recent works suggest a possibility of sending signals to a space-like separated region, contrary to the spirit of special relativity. In the first work (J. Grunhaus, S. Popescu, and D. Rohrlich, Phys. Rev. A 53, 3781 (1996)) it has been shown that sending signals to a particular union of space-like separated regions cannot cause causality paradoxes. Another work (Y. Aharonov and L. Vaidman, Phys. Rev. A 61, 052108 (2000)) showed that the relative phase of the quantum superposition of a particle at two separate locations can be measured locally. Together with the possibility of changing the relative phase in a nonlocal way using the potential effect we, apparently, have a method of sending signals to space-like separated regions. These arguments are critically analyzed in this paper.
AB - Two recent works suggest a possibility of sending signals to a space-like separated region, contrary to the spirit of special relativity. In the first work (J. Grunhaus, S. Popescu, and D. Rohrlich, Phys. Rev. A 53, 3781 (1996)) it has been shown that sending signals to a particular union of space-like separated regions cannot cause causality paradoxes. Another work (Y. Aharonov and L. Vaidman, Phys. Rev. A 61, 052108 (2000)) showed that the relative phase of the quantum superposition of a particle at two separate locations can be measured locally. Together with the possibility of changing the relative phase in a nonlocal way using the potential effect we, apparently, have a method of sending signals to space-like separated regions. These arguments are critically analyzed in this paper.
KW - Quantum Nonlocality
KW - Quantum Paradoxes
KW - Superluminal Signaling
UR - http://www.scopus.com/inward/record.url?scp=0347872721&partnerID=8YFLogxK
U2 - 10.1515/zna-2001-0105
DO - 10.1515/zna-2001-0105
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AN - SCOPUS:0347872721
SN - 0932-0784
VL - 56
SP - 20
EP - 26
JO - Zeitschrift fur Naturforschung - Section A Journal of Physical Sciences
JF - Zeitschrift fur Naturforschung - Section A Journal of Physical Sciences
IS - 1-2
ER -