{"title":"Landscape of Narain CFTs","authors":"Rajae Sammani, El Hassan Saidi, Rachid Ahl Laamara, Lalla Btissam Drissi","doi":"10.1002/prop.70029","DOIUrl":null,"url":null,"abstract":"<p>In this work, the <span></span><math>\n <semantics>\n <msub>\n <mi>AdS</mi>\n <mn>3</mn>\n </msub>\n <annotation>${\\rm AdS}_{3}$</annotation>\n </semantics></math> gravitational bulk dual to an ensemble of Narain CFTs and their generalisations is investigated to establish bounds consistent with the Swampland program. Focusing on the AdS distance and finiteness conjectures, the central charge of Narain CFTs forming the ensemble is shown to be finite. Combining anomaly and unitary requirements, an upper bound on the rank of the abelian U(1) gauge symmetries that can consistently couple to the <span></span><math>\n <semantics>\n <msub>\n <mi>AdS</mi>\n <mn>3</mn>\n </msub>\n <annotation>${\\rm AdS}_{3}$</annotation>\n </semantics></math> gravity is derived. Explicit realisations are given of these constraints by determining the range of the Chern–Simons level <span></span><math>\n <semantics>\n <msup>\n <mi>k</mi>\n <mi>G</mi>\n </msup>\n <annotation>$k^{G}$</annotation>\n </semantics></math> corresponding to a bounded <span></span><math>\n <semantics>\n <msub>\n <mi>AdS</mi>\n <mn>3</mn>\n </msub>\n <annotation>${\\rm AdS}_{3}$</annotation>\n </semantics></math> radius. Accordingly, the Narain landscape is finite with a number of admissible CFTs constrained as <span></span><math>\n <semantics>\n <mrow>\n <mn>3</mn>\n <mo>/</mo>\n <mn>2</mn>\n <mo>≲</mo>\n <mi>c</mi>\n <mo>≲</mo>\n <msup>\n <mn>10</mn>\n <mn>3</mn>\n </msup>\n </mrow>\n <annotation>$3/2\\lesssim c\\lesssim 10^{3}$</annotation>\n </semantics></math>.</p>","PeriodicalId":55150,"journal":{"name":"Fortschritte Der Physik-Progress of Physics","volume":"73 9-10","pages":""},"PeriodicalIF":7.8000,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Fortschritte Der Physik-Progress of Physics","FirstCategoryId":"101","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/prop.70029","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"PHYSICS, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
In this work, the gravitational bulk dual to an ensemble of Narain CFTs and their generalisations is investigated to establish bounds consistent with the Swampland program. Focusing on the AdS distance and finiteness conjectures, the central charge of Narain CFTs forming the ensemble is shown to be finite. Combining anomaly and unitary requirements, an upper bound on the rank of the abelian U(1) gauge symmetries that can consistently couple to the gravity is derived. Explicit realisations are given of these constraints by determining the range of the Chern–Simons level corresponding to a bounded radius. Accordingly, the Narain landscape is finite with a number of admissible CFTs constrained as .
期刊介绍:
The journal Fortschritte der Physik - Progress of Physics is a pure online Journal (since 2013).
Fortschritte der Physik - Progress of Physics is devoted to the theoretical and experimental studies of fundamental constituents of matter and their interactions e. g. elementary particle physics, classical and quantum field theory, the theory of gravitation and cosmology, quantum information, thermodynamics and statistics, laser physics and nonlinear dynamics, including chaos and quantum chaos. Generally the papers are review articles with a detailed survey on relevant publications, but original papers of general interest are also published.