Causal Sets and an Emerging Continuum
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arXiv
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866914879110119424 |
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| author | Carlip, Steven |
| author_facet | Carlip, Steven |
| contents | Causal set theory offers a simple and elegant picture of discrete physics. But the vast majority of causal sets look nothing at all like continuum spacetimes, and must be excluded in some way to obtain a realistic theory. I describe recent results showing that almost all non-manifoldlike causal sets are, in fact, very strongly suppressed in the gravitational path integral. This does not quite demonstrate the emergence of a continuum -- we do not yet understand the remaining unsuppressed causal sets well enough -- but it is a significant step in that direction. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_14059 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Causal Sets and an Emerging Continuum Carlip, Steven General Relativity and Quantum Cosmology High Energy Physics - Theory Causal set theory offers a simple and elegant picture of discrete physics. But the vast majority of causal sets look nothing at all like continuum spacetimes, and must be excluded in some way to obtain a realistic theory. I describe recent results showing that almost all non-manifoldlike causal sets are, in fact, very strongly suppressed in the gravitational path integral. This does not quite demonstrate the emergence of a continuum -- we do not yet understand the remaining unsuppressed causal sets well enough -- but it is a significant step in that direction. |
| title | Causal Sets and an Emerging Continuum |
| topic | General Relativity and Quantum Cosmology High Energy Physics - Theory |
| url | https://arxiv.org/abs/2405.14059 |