Particle detectors under chronological hazard

A bstract We analyze how the presence of closed timelike curves (CTCs) characterizing a time machine can be discerned by placing a local particle detector in a region of spacetime which is causally disconnected from the CTCs. Our study shows that not only can the detector tell if there are CTCs, but...

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Bibliographic Details
Published inThe journal of high energy physics Vol. 2024; no. 7; pp. 1 - 20
Main Authors Alonso-Serrano, Ana, Tjoa, Erickson, Garay, Luis J., Martín-Martínez, Eduardo
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer Berlin Heidelberg 02.07.2024
Springer Nature B.V
SpringerOpen
Subjects
2D Gravity
Black Holes
Boundary conditions
Classical and Quantum Gravitation
de Sitter space
Elementary Particles
Field Theories in Lower Dimensions
Geometry
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Radiation counters
Regular Article - Theoretical Physics
Relativity Theory
Sensors
Spacetime
String Theory
Topology
Field Theories in Lower Dimensions
2D Gravity
Black Holes
de Sitter space
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Summary:A bstract We analyze how the presence of closed timelike curves (CTCs) characterizing a time machine can be discerned by placing a local particle detector in a region of spacetime which is causally disconnected from the CTCs. Our study shows that not only can the detector tell if there are CTCs, but also that the detector can separate topological from geometrical information and distinguish periodic spacetimes without CTCs (like the Einstein cylinder), curvature, and spacetimes with topological identifications that enable time-machines.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP07(2024)001