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DC Field | Value | Language |
---|---|---|
dc.contributor.author | KAKADE, KARTIK | en_US |
dc.contributor.author | Singh, Avnish | en_US |
dc.contributor.author | Singh, Tejinder P. | en_US |
dc.date.accessioned | 2024-02-12T11:51:00Z | - |
dc.date.available | 2024-02-12T11:51:00Z | - |
dc.date.issued | 2023-12 | en_US |
dc.identifier.citation | Physics Letters A, 490, 129191. | en_US |
dc.identifier.issn | 0375-9601 | en_US |
dc.identifier.issn | 1873-2429 | en_US |
dc.identifier.uri | https://doi.org/10.1016/j.physleta.2023.129191 | en_US |
dc.identifier.uri | http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/8537 | - |
dc.description.abstract | Collapse of the wave function appears to violate the quantum superposition principle as well as deterministic evolution. Objective collapse models propose a dynamical explanation for this phenomenon, by making a stochastic non-unitary and norm-preserving modification to the Schrödinger equation. In the present article we ask how a quantum system evolves under a deterministic and non-unitary but norm-preserving evolution? We show using a simple two-qubit model that under suitable conditions, quantum linear superposition is broken, with the system predictably driven to one or the other eigenstates. If this deterministic dynamics is coarse-grained and observed over a lower time resolution, the outcomes appear random while obeying the Born probability rule. Our analysis hence throws light on the distinct roles of non-unitarity and of stochasticity in objective collapse models. | en_US |
dc.language.iso | en | en_US |
dc.publisher | Elsevier B.V. | en_US |
dc.subject | Spontaneous collapse models | en_US |
dc.subject | Quantum foundations | en_US |
dc.subject | Measurement problem | en_US |
dc.subject | Trace dynamics | en_US |
dc.subject | Time of arrival | en_US |
dc.subject | Quantum gravity | en_US |
dc.subject | Octonions | en_US |
dc.subject | 2023 | en_US |
dc.title | Spontaneous localisation from a coarse-grained deterministic and non-unitary dynamics | en_US |
dc.type | Article | en_US |
dc.contributor.department | Dept. of Physics | en_US |
dc.identifier.sourcetitle | Physics Letters A | en_US |
dc.publication.originofpublisher | Foreign | en_US |
Appears in Collections: | JOURNAL ARTICLES |
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