It is now widely believed that our Universe experienced
\ninflationary expansion in the early stage when fluctuations
\nthat seeded the observed large-scale structure were
\ngenerated quantum mechanically. During this epoch
\nthe Higgs field in the standard model also acquired
\nquantum fluctuations. We discuss its cosmological
\nconsequences. In the most dramatic case, the Higgs
\nfield would exhibit a run-away behavior to cause
\ninstability of the Universe. Even if this was not the
\ncase, long-wave fluctuations produce Higgs condensation
\nin general, which may generate too large curvature
\nfluctuations in some types of inflation models.
\nFinally we also discuss the possibility that the Higgs
\nfield itself induced inflation in the early Universe in the
\ncontext of the generalized G inflation.<\/p>\n","protected":false},"featured_media":0,"template":"","tags":[],"seminar_category":[55],"acf":{"s_now_accepting":true,"s_date_order":"2013-01-23 17:00:00","s_date_end":null,"s_date_text":"","s_text":"Jun'ichi Yokoyama","s_place":"KMI Science Symposia (ES635)","s_place_other":"","s_categoryother":"","s_poster":"