--- title: "Lightfront holography and area density of entropy associated with quantum localization on a wedge-horizon • CBPF Index" description: "CBPF INDEX is the system that tracks the scientific and technological output of CBPF. It lists the articles, books, technical reports and other publications of the whole CBPF community." canonical_url: "https://index.cbpf.br/en/publicacoes/6ad2a767639f62b11adbb050" locale: en meta: "og:description": "CBPF INDEX is the system that tracks the scientific and technological output of CBPF. It lists the articles, books, technical reports and other publications of the whole CBPF community." "og:image": "https://index.cbpf.br/_og/d/c_Item%2Ctitulo_Lightfront%2Bholography%2Band%2Barea%2Bdensity%2Bof%2Bentropy%2Bassociated%2Bwith%2Bquantum%2Blocalization%2Bon%2Ba%2Bwedge-horizon%2Ctipo_Physics%2BNote%2Ccor_~I2E4MmMwMA%2Cautores_Bert%2BSchroer%2Cdetalhe_2002%2Csecao_Publications%2Cp_Ii9lbi9wdWJsaWNhY29lcy82YWQyYTc2NzYzOWY2MmIxMWFkYmIwNTAi%2Cs_UTMMLRNG_3OEfFzu.png" "og:image:height": "600" "og:image:type": image/png "og:image:width": "1200" "og:title": "Lightfront holography and area density of entropy associated with quantum localization on a wedge-horizon • CBPF Index" "twitter:image": "https://index.cbpf.br/_og/d/c_Item%2Ctitulo_Lightfront%2Bholography%2Band%2Barea%2Bdensity%2Bof%2Bentropy%2Bassociated%2Bwith%2Bquantum%2Blocalization%2Bon%2Ba%2Bwedge-horizon%2Ctipo_Physics%2BNote%2Ccor_~I2E4MmMwMA%2Cautores_Bert%2BSchroer%2Cdetalhe_2002%2Csecao_Publications%2Cp_Ii9lbi9wdWJsaWNhY29lcy82YWQyYTc2NzYzOWY2MmIxMWFkYmIwNTAi%2Cs_UTMMLRNG_3OEfFzu.png" --- > Index of every page on this site: [llms.txt](https://index.cbpf.br/llms.txt) **Physics Note****Published** # **Lightfront holography and area density of entropy associated with quantum localization on a wedge-horizon** **Bert Schroer** 2002 [**Download PDF **0.3 MB](https://index.cbpf.br/files/publicacao/6ad2a767639f62b11adbb050/pdf) [**Contact owner**](mailto:apub@cbpf.br?subject=Lightfront%20holography%20and%20area%20density%20of%20entropy%20associated%20with%20quantum%20localization%20on%20a%20wedge-horizon) ## **Publication details**
Authors
Bert Schroer
Type
Physics Note
Status
Published
Publication date
2002
Description
The lightfront quantization of the 70s is reviewed in the more rigorous setting of lightfront (LF) restriction of free fields in which the lightfront is considered to be the linear extension of the upper causal horizon of a wedge region. Particular attention is given to the change of localization structure in passing from the wedge to its horizon which results in the emergence of a transverse quantum mechanical substructure of the QFT on the horizon and its lightfront extension. The vacuum fluctuations of QFT on the LF are compressed into the direction of the lightray (where they become associated with a chiral QFT) and lead to the notion of area density of a ``split localization'' entropy. To overcome the limitation of this restriction approach and include interacting theories with non-canonical short distance behavior, we introduce a new concept of algebraic lightfront holography (LFH) which uses ideas of algebraic QFT, in particular the modular structure of its associated local operator algebras. In this way the localization properties of LF degrees of freedom including the absence of transverse vacuum fluctuations are confirmed to be stable against interactions. The important universality aspect of lightfront holography is emphasized. Only in this way one is able to extract from the ``split-localization'' entropy a split-independent additive entropy-like measure of the entanglement of the vacuum upon restriction to the horizon algebra.
Year
2002
Number
CBPF-NF-028/02
Linked to a thesis
No
Linked to a grant
No
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