{ "id": "1602.00099", "version": "v1", "published": "2016-01-30T10:17:48.000Z", "updated": "2016-01-30T10:17:48.000Z", "title": "The Stokes phenomenon and the Lerch zeta function", "authors": [ "R B Paris" ], "comment": "13 pages, 0 figures. arXiv admin note: text overlap with arXiv:1407.2782", "categories": [ "math.CA" ], "abstract": "We examine the exponentially improved asymptotic expansion of the Lerch zeta function $L(\\lambda,a,s)=\\sum_{n=1}^\\infty \\exp (2\\pi ni\\lambda)/(n+a)^s$ for large complex values of $a$, with $\\lambda$ and $s$ regarded as parameters. It is shown that an infinite number of subdominant exponential terms switch on across the Stokes lines $\\arg\\,a=\\pm\\pi/2$. In addition, it is found that the transition across the upper and lower imaginary $a$-axes is associated, in general, with unequal scales. Numerical calculations are presented to confirm the theoretical predictions.", "revisions": [ { "version": "v1", "updated": "2016-01-30T10:17:48.000Z" } ], "analyses": { "subjects": [ "11M35", "30E15", "34E05", "41A30", "41A60" ], "keywords": [ "lerch zeta function", "stokes phenomenon", "subdominant exponential terms switch", "large complex values", "asymptotic expansion" ], "note": { "typesetting": "TeX", "pages": 13, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2016arXiv160200099P" } } }