{"title":"二次体积增长的引力瞬子","authors":"Gao Chen, Jeff Viaclovsky","doi":"10.1112/jlms.12886","DOIUrl":null,"url":null,"abstract":"<p>There are two known classes of gravitational instantons with quadratic volume growth at infinity, known as type <span></span><math>\n <semantics>\n <mo>ALG</mo>\n <annotation>$\\operatorname{ALG}$</annotation>\n </semantics></math> and <span></span><math>\n <semantics>\n <msup>\n <mo>ALG</mo>\n <mo>∗</mo>\n </msup>\n <annotation>$\\operatorname{ALG}^*$</annotation>\n </semantics></math>. Gravitational instantons of type <span></span><math>\n <semantics>\n <mo>ALG</mo>\n <annotation>$\\operatorname{ALG}$</annotation>\n </semantics></math> were previously classified by Chen–Chen. In this paper, we prove a classification theorem for <span></span><math>\n <semantics>\n <msup>\n <mi>ALG</mi>\n <mo>∗</mo>\n </msup>\n <annotation>${\\rm ALG}^*$</annotation>\n </semantics></math> gravitational instantons. We determine the topology and prove existence of “uniform” coordinates at infinity for both ALG and <span></span><math>\n <semantics>\n <msup>\n <mi>ALG</mi>\n <mo>∗</mo>\n </msup>\n <annotation>${\\rm ALG}^*$</annotation>\n </semantics></math> gravitational instantons. We also prove a result regarding the relationship between ALG gravitational instantons of order <span></span><math>\n <semantics>\n <mi>n</mi>\n <annotation>$\\mathfrak {n}$</annotation>\n </semantics></math> and those of order 2.</p>","PeriodicalId":49989,"journal":{"name":"Journal of the London Mathematical Society-Second Series","volume":null,"pages":null},"PeriodicalIF":1.0000,"publicationDate":"2024-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1112/jlms.12886","citationCount":"0","resultStr":"{\"title\":\"Gravitational instantons with quadratic volume growth\",\"authors\":\"Gao Chen, Jeff Viaclovsky\",\"doi\":\"10.1112/jlms.12886\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>There are two known classes of gravitational instantons with quadratic volume growth at infinity, known as type <span></span><math>\\n <semantics>\\n <mo>ALG</mo>\\n <annotation>$\\\\operatorname{ALG}$</annotation>\\n </semantics></math> and <span></span><math>\\n <semantics>\\n <msup>\\n <mo>ALG</mo>\\n <mo>∗</mo>\\n </msup>\\n <annotation>$\\\\operatorname{ALG}^*$</annotation>\\n </semantics></math>. Gravitational instantons of type <span></span><math>\\n <semantics>\\n <mo>ALG</mo>\\n <annotation>$\\\\operatorname{ALG}$</annotation>\\n </semantics></math> were previously classified by Chen–Chen. In this paper, we prove a classification theorem for <span></span><math>\\n <semantics>\\n <msup>\\n <mi>ALG</mi>\\n <mo>∗</mo>\\n </msup>\\n <annotation>${\\\\rm ALG}^*$</annotation>\\n </semantics></math> gravitational instantons. We determine the topology and prove existence of “uniform” coordinates at infinity for both ALG and <span></span><math>\\n <semantics>\\n <msup>\\n <mi>ALG</mi>\\n <mo>∗</mo>\\n </msup>\\n <annotation>${\\\\rm ALG}^*$</annotation>\\n </semantics></math> gravitational instantons. We also prove a result regarding the relationship between ALG gravitational instantons of order <span></span><math>\\n <semantics>\\n <mi>n</mi>\\n <annotation>$\\\\mathfrak {n}$</annotation>\\n </semantics></math> and those of order 2.</p>\",\"PeriodicalId\":49989,\"journal\":{\"name\":\"Journal of the London Mathematical Society-Second Series\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.0000,\"publicationDate\":\"2024-03-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://onlinelibrary.wiley.com/doi/epdf/10.1112/jlms.12886\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of the London Mathematical Society-Second Series\",\"FirstCategoryId\":\"100\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1112/jlms.12886\",\"RegionNum\":2,\"RegionCategory\":\"数学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATHEMATICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of the London Mathematical Society-Second Series","FirstCategoryId":"100","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1112/jlms.12886","RegionNum":2,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATHEMATICS","Score":null,"Total":0}
Gravitational instantons with quadratic volume growth
There are two known classes of gravitational instantons with quadratic volume growth at infinity, known as type and . Gravitational instantons of type were previously classified by Chen–Chen. In this paper, we prove a classification theorem for gravitational instantons. We determine the topology and prove existence of “uniform” coordinates at infinity for both ALG and gravitational instantons. We also prove a result regarding the relationship between ALG gravitational instantons of order and those of order 2.
期刊介绍:
The Journal of the London Mathematical Society has been publishing leading research in a broad range of mathematical subject areas since 1926. The Journal welcomes papers on subjects of general interest that represent a significant advance in mathematical knowledge, as well as submissions that are deemed to stimulate new interest and research activity.