{"title":"Photonic Mode in a Space-Time with a Causal Loop: Comparison of D-CTC and S-CTC Models","authors":"A. V. Shepelin, V. A. Tomilin, L. V. Il’ichov","doi":"10.1134/S0202289323020111","DOIUrl":null,"url":null,"abstract":"<p>The evolution of a quantized electromagnetic mode in a space-time toy model with nontrivial topology, allowing closed timelike and null world lines, is considered. The physical consequences of adopting an ontological or epistemological view on a quantum state are compared. It is done within a framework of two alternative interpretations of mode evolution—Deutsch’s D-CTC model (ontological) and S-CTC model (epistemological). The future states of the mode (with respect to the causal loop) are calculated for two types of interaction with the mode’s previous version coming from the future. The found differences of the predictions may be helpful for building a future fundamental theory unifying quantum physics and gravity.</p>","PeriodicalId":583,"journal":{"name":"Gravitation and Cosmology","volume":"29 2","pages":"121 - 127"},"PeriodicalIF":1.2000,"publicationDate":"2023-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Gravitation and Cosmology","FirstCategoryId":"4","ListUrlMain":"https://link.springer.com/article/10.1134/S0202289323020111","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ASTRONOMY & ASTROPHYSICS","Score":null,"Total":0}
引用次数: 0
Abstract
The evolution of a quantized electromagnetic mode in a space-time toy model with nontrivial topology, allowing closed timelike and null world lines, is considered. The physical consequences of adopting an ontological or epistemological view on a quantum state are compared. It is done within a framework of two alternative interpretations of mode evolution—Deutsch’s D-CTC model (ontological) and S-CTC model (epistemological). The future states of the mode (with respect to the causal loop) are calculated for two types of interaction with the mode’s previous version coming from the future. The found differences of the predictions may be helpful for building a future fundamental theory unifying quantum physics and gravity.
期刊介绍：
Gravitation and Cosmology is a peer-reviewed periodical, dealing with the full range of topics of gravitational physics and relativistic cosmology and published under the auspices of the Russian Gravitation Society and Peoples’ Friendship University of Russia. The journal publishes research papers, review articles and brief communications on the following fields: theoretical (classical and quantum) gravitation; relativistic astrophysics and cosmology, exact solutions and modern mathematical methods in gravitation and cosmology, including Lie groups, geometry and topology; unification theories including gravitation; fundamental physical constants and their possible variations; fundamental gravity experiments on Earth and in space; related topics. It also publishes selected old papers which have not lost their topicality but were previously published only in Russian and were not available to the worldwide research community
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