{"id":111,"date":"2015-01-16T13:54:26","date_gmt":"2015-01-16T04:54:26","guid":{"rendered":"http:\/\/asuka.phys.nara-wu.ac.jp\/sft15nara\/?page_id=111"},"modified":"2015-03-10T16:29:58","modified_gmt":"2015-03-10T07:29:58","slug":"%e8%ac%9b%e6%bc%94","status":"publish","type":"page","link":"https:\/\/asuka.phys.nara-wu.ac.jp\/sft15nara\/%e8%ac%9b%e6%bc%94\/","title":{"rendered":"\u8b1b\u6f14"},"content":{"rendered":"

\u6d45\u91ce \u96c5\u5b50\u6c0f\u3000\uff08\u6210\u8e4a\u5927\uff09<\/strong><\/p>\n

\u96f6\u8cea\u91cf\u9ad8\u968e\u30b9\u30d4\u30f3\u5834\u3092\u6301\u3064\u62e1\u5f35\u3055\u308c\u305f\u5f26\u306e\u5834\u306e\u7406\u8ad6\u306e\u69cb\u6210\u3068\u89e3\u6790 <\/strong><\/p>\n

\u5f26\u7406\u8ad6\u306e\u72b6\u614b\u7a7a\u9593\u3092\u30c6\u30f3\u30bd\u30eb\u7a4d\u3057\u3066\u3001\u3042\u308b\u7a2e\u306e\u6761\u4ef6\u3092\u8ab2\u3057\u305f\u7a7a\u9593\u3092\u72b6\u614b\u7a7a\u9593\u306b\u6301\u3064\u3088\u3046\u306a\u300c\u62e1\u5f35\u3055\u308c\u305f\u5f26\u306e\u5834\u306e\u7406\u8ad6\u300d\u306e\u81ea\u7531\u306a\u4f5c\u7528\u3092\u69cb\u6210\u3057\u3001\u30b2\u30fc\u30b8\u5bfe\u79f0\u6027\u304a\u3088\u3073\u30b2\u30fc\u30b8\u56fa\u5b9a\u306b\u3064\u3044\u3066\u8b70\u8ad6\u3059\u308b\u3002\u3053\u306e\u7406\u8ad6\u304b\u3089\u4efb\u610f\u306e\u30c6\u30f3\u30bd\u30eb\u8868\u73fe\u306e\u30b2\u30fc\u30b8\u5834\u306e\u5171\u5909\u306a\u4f5c\u7528\u304c\u7cfb\u7d71\u7684\u306b\u5f97\u3089\u308c\u3001\u5177\u4f53\u7684\u306b\u3044\u304f\u3064\u304b\u306e\u9ad8\u968e\u30b9\u30d4\u30f3\u30b2\u30fc\u30b8\u5834\u306e\u4f5c\u7528\u3092\u69cb\u6210\u3059\u308b\u3002\uff08M. Asano and M. Kato, NPB877 (2013) 1107 and work in progress.\uff09<\/span><\/p>\n

\u77f3\u6a4b \u5ef6\u5e78\u6c0f\u3000\uff08\u7b51\u6ce2\u5927\uff09 <\/strong><\/a><\/p>\n

Multiloop amplitudes of light-cone gauge superstring field theory in noncritical dimensions<\/strong><\/p>\n

It is possible to define light-cone gauge superstring field theory in noncritical dimensions. These theories can be used to regularize contact term divergences. It has been shown that the on-shell tree amplitudes of critical superstring theory can be reproduced by analytically continuing the number of dimensions to 10 in those of noncritical ones. In this talk, we discuss how we can calculate multiloop amplitudes in the noncritical superstring field theory. (This talk is based on a collaboration with K. Murakami.)
\n<\/span><\/p>\n

\u5927\u5ddd \u7950\u53f8\u6c0f\u3000\uff08\u6771\u5927\u7dcf\u6587\uff09 <\/strong><\/a><\/p>\n

The A\u221e<\/sub> structure from the Berkovits formulation of open superstring field theory <\/strong><\/p>\n

When we quantize open string field theory, the structure called A\u221e<\/sub> plays a crucial role. However, the Berkovits formulation of open superstring field theory, which is one of the most successful formulations of superstring field theory, is based on the large Hilbert space of the superconformal ghost sector, and we have not been able to see the A\u221e<\/sub> structure in this formulation. Recently, on the other hand, Erler, Konopka and Sachs succeeded in constructing an action with the A\u221e<\/sub> structure by formulating open superstring field theory based on the small Hilbert space. In this talk, we show that this theory with the A\u221e<\/sub> structure is related to the Berkovits formulation by field redefinition and partial gauge fixing. This talk is based on an upcoming paper with Erler and Takezaki.<\/span><\/p>\n

\u5cb8\u672c \u529f\u6c0f\u3000\uff08\u65b0\u6f5f\u5927\uff09\u00a0<\/strong><\/a><\/p>\n

\u8d85\u5f26\u306e\u5834\u306e\u7406\u8ad6\u306b\u304a\u3051\u308b\u53e4\u5178\u89e3\u3068\u6570\u5024\u89e3\u6790<\/strong><\/p>\n

\u3053\u3053\u3067\u306f\u3001\u5f26\u5834\u306e\u30ec\u30d9\u30eb\u30c8\u30e9\u30f3\u30b1\u30fc\u30b7\u30e7\u30f3\u8fd1\u4f3c\u3092\u7528\u3044\u3066\u3001\u8d85\u5f26\u306e\u5834\u306e\u7406\u8ad6\u306b\u304a\u3051\u308b\u53e4\u5178\u89e3\u3068\u305d\u306e\u30b2\u30fc\u30b8\u4e0d\u5909\u91cf\u306e\u6570\u5024\u7684\u306a\u632f\u308b\u821e\u3044\u3092\u8abf\u3079\u308b\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u8fd1\u5e74\u53ef\u80fd\u306b\u306a\u3063\u3066\u304d\u305f\u89e3\u6790\u8a08\u7b97\u3068\u305d\u306e\u7269\u7406\u7684\u89e3\u91c8\u306e\u6b63\u5f53\u5316\u3092\u4e0e\u3048\u3001\u307e\u305f\u3001\u5f26\u5834\u306e\u7a7a\u9593\u306e\u3088\u308a\u6df1\u3044\u7406\u89e3\u306b\u3064\u306a\u304c\u308b\u3068\u671f\u5f85\u3057\u3066\u3044\u308b\u3002<\/span><\/p>\n

\u56fd\u53cb \u6d69\u6c0f\u3000\uff08\u4eac\u5927\u57fa\u7814\uff09 <\/strong><\/a><\/p>\n

Symmetries and Feynman Rules for Ramond Sector in WZW-type Superstring Field Theories <\/strong><\/p>\n

We examine the symmetries of the action supplemented by the constraint in the WZW-type open and heterotic superstring field theories. It is found that these pseudo-actions have additional gauge symmetries provided we impose the constraint after the transformation. Respecting these additional symmetries, we propose a prescription for the new Feynmna rules for the Ramond sector. It is shown that the new rules reproduce the well-known on-shell four- and five-point amplitudes with external fermions.
\n<\/span><\/p>\n

\u5800\u7530\u3000\u5065\u53f8\u6c0f\u3000\uff08\u5317\u5927\u9662\uff09<\/strong><\/a><\/p>\n

Closed Superstrings at Finite Temperature in the Framework of Thermo Field Dynamics <\/strong><\/p>\n

Although the finite temperature systems of strings have been mainly examined in the framework of Matsubara formalism, quite a few works have been done to investigate these systems in the framework of thermo field dynamics. Previously we have calculated the thermal vacuum state and the partition function for a single closed superstring in the framework of thermo field dynamics. From this we can reproduce the free energy for multiple strings in the case of Matsubara method. However it is unsatisfactory to derive free energy in such a way, since the free energy for multiple strings should be obtained by only calculating the expectation value of the corresponding operator in the thermal vacuum state. In this talk, we compute the thermal vacuum state for multiple closed superstrings based on free light-cone superstring field theory. From this we can reproduce the free energy for closed superstrings in the case of Matsubara method. We coment on the relation between this closed superstrings at finite temperature and the open superstrings on D9-brane–anti-D9-brane pairs.<\/span><\/p>\n

\u677e\u6c38\u3000\u535a\u662d\u6c0f\u3000\uff08\u6771\u5927\u7dcf\u6587\uff09<\/strong><\/a><\/p>\n

WZW-type NS-NS string field theory and its gauge fixing conditions<\/strong><\/p>\n

NS-NS\u8d85\u5f26\u306e\u5834\u306e\u7406\u8ad6\u306b\u5bfe\u3059\u308b Wess-Zumino-Witten\u578b\u306e\u5b9a\u5f0f\u5316\u3068\u305d\u306e\u30b2\u30fc\u30b8\u56fa\u5b9a\u306b\u3064\u3044\u3066\u8b70\u8ad6\u3059\u308b\u3002WZW-type\u306e\u4f5c\u7528\u306b\u5bfe\u3059\u308b\u90e8\u5206\u30b2\u30fc\u30b8\u56fa\u5b9a\u6761\u4ef6\u3068\u3057\u3066\u3001\u90e8\u5206\u30b2\u30fc\u30b8\u56fa\u5b9a\u5f8c\u306e\u4f5c\u7528\u304c Erler, Konopka, Suchs\u306b\u3088\u3063\u3066\u69cb\u6210\u3055\u308c\u305f L\u221e-type \u306e\u4f5c\u7528\u3068\u5408\u81f4\u3059\u308b\u3082\u306e\u3092\u63a2\u3057\u3001WZW\u578b\u306e\u5b9a\u5f0f\u5316\u306e\u30b2\u30fc\u30b8\u56fa\u5b9a\u3092\u8a66\u307f\u308b\u3002\uff08arXiv:1407.8485\u3001\u53ca\u3073\u3001\u5b66\u4f4d\u8ad6\u6587\u306b\u57fa\u3065\u304f\u3002\uff09
\n<\/span><\/p>\n

\u6749\u4e0b\u3000\u5b97\u592a\u90ce\u6c0f\u3000\uff08\u4eac\u5927\u7406\uff09<\/strong><\/a><\/p>\n

Ramond-Ramond couplings of D-branes
\n<\/strong><\/p>\n

BSFT\u3068\u3088\u3070\u308c\u308b\u958b\u5f26\u306e\u5834\u306e\u7406\u8ad6\u3067\u306f\u3001\u8d85\u958b\u5f26\u306e\u5834\u306e\u7406\u8ad6\u306e\u4f5c\u7528\u306f\u30c7\u30a3\u30b9\u30af\u5206\u914d\u95a2\u6570\u306b\u3088\u3063\u3066\u4e0e\u3048\u3089\u308c\u308b\u3068\u8003\u3048\u3089\u308c\u3066\u3044\u308b\u3002\u6211\u3005\u306fRamond- Ramond\u30bb\u30af\u30bf\u30fc\u306b\u5bfe\u3057\u3066\u3001\u4efb\u610f\u306e\u5883\u754c\u76f8\u4e92\u4f5c\u7528\u3092\u5165\u308c\u305f\u5206\u914d\u95a2\u6570\u3092\u5c40\u6240\u5316\u306e\u624b\u6cd5\u306b\u3088\u3063\u3066\u53b3\u5bc6\u306b\u8a08\u7b97\u3057\u305f\u3002\u3053\u308c\u306b\u3088\u3063\u3066D9\u30d6\u30ec\u30fc\u30f3\uff08\u3042\u308b\u3044\u306fD9-\u53cd D9\u30d6\u30ec\u30fc\u30f3\u5bfe\uff09\u4e0a\u306e\u6709\u8cea\u91cf\u30e2\u30fc\u30c9\u3092\u542b\u3080\u4efb\u610f\u306e\u30dc\u30bd\u30f3\u7684\u306a\u8d85\u958b\u5f26\u306e\u5834\u3068RR\u5834\u3068\u306e\u30ab\u30c3\u30d7\u30ea\u30f3\u30b0\u516c\u5f0f\u3092\u66f8\u304d\u4e0b\u3059\u3053\u3068\u304c\u3067\u304d\u3001\u305d\u308c\u304cQuillen\u306e superconnection\u3092\u7528\u3044\u3066\u66f8\u304b\u308c\u308b\u3053\u3068\u304c\u308f\u304b\u3063\u305f\u306e\u3067\u3001\u305d\u306e\u7d50\u679c\u3068\u5fdc\u7528\u306b\u3064\u3044\u3066\u8b70\u8ad6\u3057\u305f\u3044\u3002
\n<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

\u6d45\u91ce \u96c5\u5b50\u6c0f\u3000\uff08\u6210\u8e4a\u5927\uff09 \u96f6\u8cea\u91cf\u9ad8\u968e\u30b9\u30d4\u30f3\u5834\u3092\u6301\u3064\u62e1\u5f35\u3055\u308c\u305f\u5f26\u306e\u5834\u306e\u7406\u8ad6\u306e\u69cb\u6210\u3068… <\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-111","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/asuka.phys.nara-wu.ac.jp\/sft15nara\/wp-json\/wp\/v2\/pages\/111","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/asuka.phys.nara-wu.ac.jp\/sft15nara\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/asuka.phys.nara-wu.ac.jp\/sft15nara\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/asuka.phys.nara-wu.ac.jp\/sft15nara\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/asuka.phys.nara-wu.ac.jp\/sft15nara\/wp-json\/wp\/v2\/comments?post=111"}],"version-history":[{"count":24,"href":"https:\/\/asuka.phys.nara-wu.ac.jp\/sft15nara\/wp-json\/wp\/v2\/pages\/111\/revisions"}],"predecessor-version":[{"id":186,"href":"https:\/\/asuka.phys.nara-wu.ac.jp\/sft15nara\/wp-json\/wp\/v2\/pages\/111\/revisions\/186"}],"wp:attachment":[{"href":"https:\/\/asuka.phys.nara-wu.ac.jp\/sft15nara\/wp-json\/wp\/v2\/media?parent=111"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}