{"id":10544,"date":"2013-09-16T12:41:00","date_gmt":"2013-09-16T12:41:00","guid":{"rendered":"http:\/\/melotopia.net\/b\/?p=10544"},"modified":"2013-09-16T12:41:00","modified_gmt":"2013-09-16T12:41:00","slug":"%ec%9e%90%eb%b0%9c%ec%a0%81-%eb%8c%80%ec%b9%ad%ec%84%b1-%eb%b6%95%ea%b4%b4","status":"publish","type":"post","link":"http:\/\/melotopia.net\/b\/?p=10544","title":{"rendered":"\uc790\ubc1c\uc801 \ub300\uce6d\uc131 \ubd95\uad34"},"content":{"rendered":"<div class=\"desc\">\n<div class=\"tt_article_useless_p_margin\">\n<p>\n          *\ub0b4\uc77c \uc219\uc81c \ub0b4\ub294 \uc0ac\ub78c\ub4e4 \ubca0\uaef4\uac00\uae30 \uc5c6\uae30.<br \/>\n          \n<\/p>\n<p>\n\n<\/p>\n<p>\n          \uc790\ubc1c\uc801 \ub300\uce6d\uc131 \ubd95\uad34(Spontaneous symmetry breaking)\ub294 \uc790\uc5f0\uc5d0\uc11c \ud754\ud788 \uc77c\uc5b4\ub098\ub294 \ub300\uce6d\uc131 \ubd95\uad34 \uacfc\uc815\uc758 \ud558\ub098\uc774\ub2e4. \uc774\uac83\uc774 \ubb34\uc5c7\uc778\uc9c0 \uc124\uba85\ud558\uae30 \uc704\ud574\uc11c\ub294 \uc6b0\uc120 \ub300\uce6d\uc131\uc744 \uc774\ud574\ud574\uc57c \ud558\uace0, \uadf8 \ubd95\uad34\uac00 \ubb34\uc5c7\uc744 \uc758\ubbf8\ud558\ub294\uc9c0 \uc54c\uc544\uc57c \ud55c\ub2e4. \uadf8\ub9ac\uace0 \uadf8\uac83\uc774 \uc790\ubc1c\uc801\uc778 \uac83\uacfc \uadf8\ub807\uc9c0 \uc54a\uc740 \uac83\uc774 \uc5b4\ub5a4 \ucc28\uc774\uac00 \uc788\ub294\uc9c0 \uc54c\uc544\ubd10\uc57c \ud560 \uac83\uc774\ub2e4.\n         <\/p>\n<p>\n\n<\/p>\n<p>\n          \ub300\uce6d\uc131\uc774\ub780 \uc77c\ubc18\uc801\uc73c\ub85c \ubcc0\ud658\uc5d0 \ub300\ud558\uc5ec \ubcc0\ud558\uc9c0 \uc54a\ub294 \uc131\uc9c8\uc744 \ub73b\ud55c\ub2e4. \ubb3c\ub9ac\ud559\uc801\uc73c\ub85c\ub294, \ub77c\uadf8\ub791\uc9c0\uc548\uc774\ub098 \ud574\ubc00\ud1a0\ub2c8\uc548 \ub4f1 \uc8fc\uc5b4\uc9c4 \ubb3c\ub9ac\uacc4\ub97c \uc124\uba85\ud558\ub294 \ubc29\uc815\uc2dd\uc774 \ubcc0\ud658\uc744 \uc791\uc6a9\ud558\ub354\ub77c\ub3c4 \uadf8 \ubaa8\uc591\uc774 \ubcc0\ud558\uc9c0 \uc54a\ub294 \uac83\uc73c\ub85c \uc815\uc758\ud55c\ub2e4. \uadf8\ub9ac\uace0 \ubb3c\ub9ac\uacc4\ub97c \uc124\uba85\ud558\ub294 \ub77c\uadf8\ub791\uc9c0\uc548\uc5d0 \ub300\uce6d\uc131\uc774 \uc788\ub2e4\uba74 \uadf8\uc5d0 \ub300\uc751\ud558\ub294 \ubcf4\uc874\ub7c9\uc774 \uc874\uc7ac\ud55c\ub2e4\ub294 \uac83\uc774 \uc54c\ub824\uc838 \uc788\ub2e4. \uc2e4\uc81c\ub85c, \uacf5\uac04\uc5d0 \ub300\ud55c \uc774\ub3d9\uc774 \ubb3c\ub9ac \ud604\uc0c1\uc744 \ubc14\uafb8\uc9c0 \uc54a\ub294\ub2e4\ub294 \uc0ac\uc2e4(Space uniformity, translation symmetry)\ub85c\ubd80\ud130 \uc6b4\ub3d9\ub7c9 \ubcf4\uc874\ubc95\uce59\uc774 \uc131\ub9bd\ud558\uace0, \ubcf4\ub294 \ubc29\ud5a5\uc5d0 \ub530\ub77c \ubb3c\ub9ac \ud604\uc0c1\uc774 \ub2ec\ub77c\uc9c0\uc9c0 \uc54a\ub2e4\ub294 \uc0ac\uc2e4(Rotation symmetry)\uc73c\ub85c\ubd80\ud130 \uac01\uc6b4\ub3d9\ub7c9 \ubcf4\uc874\ubc95\uce59\uc744 \uc720\ub3c4\ud560 \uc218 \uc788\ub2e4.<br \/>\n          \n<\/p>\n<p>\n\n<\/p>\n<p>\n          \ub300\uce6d\uc131 \ubd95\uad34\ub294 \ub530\ub77c\uc11c \ub2e4\ub8e8\ub824\ub294 \ubb3c\ub9ac\uacc4\uc5d0 \ub300\ud55c \ud574\ubc00\ud1a0\ub2c8\uc548\uc774 \ubcc0\ud658\uc5d0 \ub300\ud558\uc5ec \ub300\uce6d\uc131\uc744 \uac16\uc9c0 \ubabb\ud558\ub294 \uacbd\uc6b0\uc5d0 \ub098\ud0c0\ub09c\ub2e4. \uac00\ub839, \uc218\uc18c\uc6d0\uc790\ub97c \uc124\uba85\ud558\ub294 \ud574\ubc00\ud1a0\ub2c8\uc548\uc740 \ud68c\uc804 \uc5f0\uc0b0\uc790\uc5d0 \ub300\ud558\uc5ec \ub300\uce6d\uc801\uc774\ub2e4. \ub530\ub77c\uc11c \uac01\uc6b4\ub3d9\ub7c9\uc774 \ub2e8\uc77c\ud55c \uace0\uc720\uac12\uc73c\ub85c \ub098\ud0c0\ub098\uba70, \ubaa8\ub4e0 \uac01\uc6b4\ub3d9\ub7c9\uc5d0 \ub300\ud574 \uac19\uc740 \uc5d0\ub108\uc9c0\ub97c \uac16\ub294 \uacb9\uce5c \uc0c1\ud0dc\ub85c \uad00\ucc30\ub41c\ub2e4. \uadf8\ub7ec\ub098 \uc218\uc18c\uc6d0\uc790\uac00 \uac15\ud55c \uc790\uae30\uc7a5 \uc548\uc5d0 \ub4e4\uc5b4\uac00\uac8c \ub418\uba74 \ud574\ubc00\ud1a0\ub2c8\uc548\uc774 \ub354\uc774\uc0c1 \ud68c\uc804\uc5d0 \ub300\ud574 \ub300\uce6d\uc801\uc774\uc9c0 \uc54a\uac8c \ub41c\ub2e4. \uc65c\ub0d0\ud558\uba74, \uc790\uae30\uc7a5\uacfc \uc218\uc18c\uc6d0\uc790\uc758 \uac01\uc6b4\ub3d9\ub7c9\uc774 \uc0c1\ud638\uc791\uc6a9\ud558\uac8c \ub418\ub294\ub370, \uc774 \uc0c1\ud638\uc791\uc6a9\uc5d0\uc11c \ub098\ud0c0\ub098\ub294 \uc5d0\ub108\uc9c0\uac00 \uc790\uae30\uc7a5\uacfc \uac01\uc6b4\ub3d9\ub7c9\uc774 \uc11c\ub85c \uc5b4\ub290 \ubc29\ud5a5\uc744 \ud5a5\ud558\uace0 \uc788\ub290\ub0d0\uc5d0 \ub530\ub77c \ub2ec\ub77c\uc9c0\uae30 \ub54c\ubb38\uc774\ub2e4. \ub530\ub77c\uc11c \uc774 \uacbd\uc6b0 \ub300\uce6d\uc131\uc774 \ubd95\uad34\ub418\uace0, \uc11c\ub85c \uacb9\uccd0\uc838 \uc788\ub358 \uc0c1\ud0dc\ub4e4\uc740 \ub2e4\ub978 \uc5d0\ub108\uc9c0 \uc0c1\ud0dc\ub85c \ubd84\ub9ac\ub418\uc5b4 \ubd84\uad11\uc120\uc5d0 \ub098\ud0c0\ub098\uac8c \ub41c\ub2e4.<br \/>\n          \n<\/p>\n<p>\n\n<\/p>\n<p>\n          \ubb3c\ub9ac\uacc4\ub97c \uc124\uba85\ud558\ub294 \ud574\ubc00\ud1a0\ub2c8\uc548\uc774 \ubcf8\uc9c8\uc801\uc73c\ub85c \uacf5\uac04\uc5d0 \ub300\ud574 \ub300\uce6d\uc131\uc744 \uac16\uace0 \uc788\ub294 \uacbd\uc6b0\ub354\ub77c\ub3c4, \ub300\uce6d\uc801\uc778 \uc0c1\ud0dc\uac00 \ubc14\ub2e5\uc0c1\ud0dc\uac00 \uc544\ub2d0 \uc218 \uc788\ub2e4. \uac00\ub839, \uac15\uc790\uc131\uccb4\uc758 \uacbd\uc6b0 \uac01\uac01\uc758 \uc2a4\ud540 \uac01\uc6b4\ub3d9\ub7c9\uc774 \ubb34\uc791\uc704\uc801\uc73c\ub85c \ubc30\uc5f4\ub41c \uc0c1\ud0dc\ubcf4\ub2e4 \uc5b4\ub5a4 \ubc29\ud5a5\uc744 \uae30\uc900\uc73c\ub85c \ub3d9\uc77c\ud558\uac8c \uc815\ub82c\ub41c \uc0c1\ud0dc\uac00 \ub354 \ub0ae\uc740 \uc5d0\ub108\uc9c0\ub97c \uac16\ub294\ub2e4. \ub530\ub77c\uc11c, \uc774 \uacbd\uc6b0 \ubc14\ub2e5\uc0c1\ud0dc\ub294 \ub300\uce6d\uc131\uc774 \uae68\uc9c4 \uc0c1\ud0dc\uc774\uace0 \uc774 \ubb3c\ub9ac\uacc4\ub294 \ub300\uce6d\uc131\uc774 \uae68\uc9c4 \uc0c1\ud0dc\uc5d0\uc11c \uc548\uc815\ud654\ub41c\ub2e4. \uc774\ub7ec\ud55c \ud604\uc0c1\uc740 \uc6b0\ub9ac \uc8fc\ubcc0\uc5d0\uc11c \ud754\ud788 \ubc1c\uacac\ud560 \uc218 \uc788\ub294\ub370, \ud2b9\ud788 \uac00\uc7a5 \uadf9\uc801\uc778 \uc0ac\ub840\ub294 \ubb3c\uc9c8 \uc785\uc790\uc758 \uc9c8\ub7c9\uc744 \ub9cc\ub4e4\uc5b4 \ub0b4\ub294 \ud789\uc2a4 \ub9e4\ucee4\ub2c8\uc998\uc774\ub2e4.<br \/>\n          \n<\/p>\n<p>\n\n<\/p>\n<p>\n          \uc6b0\ub9ac \uc6b0\uc8fc\ub97c \uae30\uc220\ud558\ub294 \uc785\uc790 \ubb3c\ub9ac\ud559\uc758 \ud45c\uc900\ubaa8\ud615\uc5d0\uc11c, \ud45c\uc900 \ubaa8\ud615\uc744 \uadf8\ub300\ub85c \uc801\uc6a9\ud558\uba74 \uc9c8\ub7c9\uc744 \ub098\ud0c0\ub0b4\ub294 \ud56d\uc740 \ub300\uce6d\uc131\uc744 \uae68\ud2b8\ub9ac\uae30 \ub54c\ubb38\uc5d0 \uc790\uc5f0\uc2a4\ub7fd\uac8c \ub3c4\uc785\ub418\uc9c0 \uc54a\ub294\ub2e4. \uc5ec\uae30\uc5d0 \ud789\uc2a4 \uc785\uc790\uc640\uc758 \uc0c1\ud638\uc791\uc6a9\uc744 \ub3c4\uc785\ud558\uba74, \uc5d0\ub108\uc9c0\uac00 \ub192\uc740 \uc0c1\ud0dc\uc5d0\uc11c\ub294 \ub77c\uadf8\ub791\uc9c0\uc548 \uc790\uccb4\uc758 \ub300\uce6d\uc131\uc744 \uae68\ud2b8\ub9ac\uc9c0 \uc54a\uc73c\uba74\uc11c \uc9c8\ub7c9\uc5d0 \ud574\ub2f9\ud558\ub294 \ud56d\uc744 \uc790\uc5f0\uc2a4\ub7fd\uac8c \uc720\ub3c4\ud560 \uc218 \uc788\ub2e4. \uc989, \ud789\uc2a4 \uc785\uc790\uc758 \uc9c4\uacf5\uae30\ub300\uac12\uc774 0\uc774 \uc544\ub2cc \uc720\ud55c\ud55c \uac12\uc73c\ub85c \uc218\ub834\ud558\uba74\uc11c \ud789\uc2a4 \uc785\uc790\uc640 \uc0c1\ud638\uc791\uc6a9\ud558\ub294 \ubaa8\ub4e0 \uc785\uc790\ub294 \ud789\uc2a4 \uc785\uc790\uc758 \uc9c4\uacf5\uae30\ub300\uac12\uc5d0 \uacb0\ud569\uc0c1\uc218\ub97c \uacf1\ud55c \ud06c\uae30\ub9cc\ud07c\uc758 \uc9c8\ub7c9\uc744 \uc5bb\uac8c \ub418\ub294 \uac83\uc774\ub2e4.\n         <\/p>\n<p>\n<br \/>\n          \uc790\ubc1c\uc801 \ub300\uce6d\uc131 \ubd95\uad34\uc758 \uacb0\uacfc\ub85c \uace8\ub4dc\uc2a4\ud1a4 \uc785\uc790\uac00 \ub3c4\uc785\ub41c\ub2e4. \uace8\ub4dc\uc2a4\ud1a4 \uc815\ub9ac\uc5d0 \ub530\ub974\uba74, \uc5f0\uc18d \ub300\uce6d\uc131\uc774 \uae68\uc9c0\ub294 \uacbd\uc6b0 \uae68\uc9c4 \ub300\uce6d\uc131\uc758 \ucc28\uc6d0\uc5d0 \ud574\ub2f9\ud558\ub294 \uace8\ub4dc\uc2a4\ud1a4 \uc785\uc790\uac00 \ub098\ud0c0\ub098\ub294\ub370, \uc774\ub294 \ub300\uce6d\uc131\uc774 \uae68\uc9c0\uba74\uc11c \ud574\ubc00\ud1a0\ub2c8\uc548\uc774 \ub300\uce6d\uc801\uc774\ub354\ub77c\ub3c4 \uadf8 \ud574\ubc00\ud1a0\ub2c8\uc548\uc774 \uae30\uc220\ud558\ub294 \ubb3c\ub9ac\uacc4\uc758 \ubc14\ub2e5\uc0c1\ud0dc\uac00 \ub300\uce6d\uc801\uc774\uc9c0 \uc54a\uae30 \ub54c\ubb38\uc774\ub2e4. \ub300\ud45c\uc801\uc778 \uace8\ub4dc\uc2a4\ud1a4 \uc785\uc790\uac00 \uc591\uc131\uc790\uc640 \uc911\uc131\uc790\uc758 SU(2) \uc544\uc774\uc18c\uc2a4\ud540 \ub300\uce6d\uc131\uc758 \ubd95\uad34\uc5d0\uc11c \ub098\ud0c0\ub098\ub294 \ud30c\uc774\uc628\uc774\ub2e4. (\uc6d0\ub798 \uace8\ub4dc\uc2a4\ud1a4 \uc785\uc790\ub294 \uc9c8\ub7c9\uc774 \uc5c6\uc9c0\ub9cc, \ud30c\uc774\uc628\uc740 \uc9c8\ub7c9\uc744 \uac16\uace0 \uc788\ub294\ub370, \uc774\uac74 \uc5b4\uca0c\ub4e0 \uc0ac\uc815\uc774 \uc788\ub2e4. \uc774\ub7f0 \uacbd\uc6b0\ub97c Pseudo-Goldstone boson\uc774\ub77c \ubd80\ub978\ub2e4.)<br \/>\n          \n<\/p>\n<p>\n\n<\/p>\n<p>\n          \uc774\ub807\ub4ef, \uc790\ubc1c\uc801 \ub300\uce6d\uc131 \ubd95\uad34 \ud604\uc0c1\uc740 \uc6b0\ub9ac \uc6b0\uc8fc\uc758 \uacf3\uacf3\uc5d0\uc11c \ucc3e\uc744 \uc218 \uc788\uc73c\uba70, \ubb3c\ub9ac\ub97c \uc774\ud574\ud558\ub294\ub370 \ub9e4\uc6b0 \uc911\uc694\ud55c \ud2c0\uc774\ub2e4.<br \/>\n          \n<\/p>\n<div style=\"width:100%;margin-top:30px;clear:both;height:30px\">\n<div style=\"width:31px;float:left;\">\n<a href=\"\/toolbar\/popup\/abuseReport\/?entryId=3385\" onclick=\"window.open(this.href, 'tistoryThisBlogPopup', 'width=550, height=510, toolbar=no, menubar=no, status=no, scrollbars=no'); return false;\"><br \/>\n<img data-recalc-dims=\"1\" decoding=\"async\" alt=\"\uc2e0\uace0\" src=\"https:\/\/i0.wp.com\/t1.daumcdn.net\/tistory_admin\/static\/ico\/ico_spam_report.png\" style=\"border:0\"\/><br \/>\n<\/a>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>*\ub0b4\uc77c \uc219\uc81c \ub0b4\ub294 \uc0ac\ub78c\ub4e4 \ubca0\uaef4\uac00\uae30 \uc5c6\uae30. \uc790\ubc1c\uc801 \ub300\uce6d\uc131 \ubd95\uad34(Spontaneous symmetry breaking)\ub294 \uc790\uc5f0\uc5d0\uc11c \ud754\ud788 \uc77c\uc5b4\ub098\ub294 \ub300\uce6d\uc131 \ubd95\uad34 \uacfc\uc815\uc758 \ud558\ub098\uc774\ub2e4. \uc774\uac83\uc774 \ubb34\uc5c7\uc778\uc9c0 \uc124\uba85\ud558\uae30 \uc704\ud574\uc11c\ub294 \uc6b0\uc120 \ub300\uce6d\uc131\uc744 \uc774\ud574\ud574\uc57c \ud558\uace0, \uadf8 \ubd95\uad34\uac00 \ubb34\uc5c7\uc744 \uc758\ubbf8\ud558\ub294\uc9c0 \uc54c\uc544\uc57c \ud55c\ub2e4. \uadf8\ub9ac\uace0 \uadf8\uac83\uc774 \uc790\ubc1c\uc801\uc778 \uac83\uacfc \uadf8\ub807\uc9c0 \uc54a\uc740 \uac83\uc774 \uc5b4\ub5a4 \ucc28\uc774\uac00 \uc788\ub294\uc9c0 \uc54c\uc544\ubd10\uc57c \ud560 \uac83\uc774\ub2e4. \ub300\uce6d\uc131\uc774\ub780 \uc77c\ubc18\uc801\uc73c\ub85c \ubcc0\ud658\uc5d0 \ub300\ud558\uc5ec \ubcc0\ud558\uc9c0 \uc54a\ub294 \uc131\uc9c8\uc744 \ub73b\ud55c\ub2e4. \ubb3c\ub9ac\ud559\uc801\uc73c\ub85c\ub294, \ub77c\uadf8\ub791\uc9c0\uc548\uc774\ub098 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_crdt_document":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[2],"tags":[],"class_list":["post-10544","post","type-post","status-publish","format-standard","hentry","category-academic"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p8o6gA-2K4","jetpack-related-posts":[],"jetpack_likes_enabled":true,"_links":{"self":[{"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/posts\/10544","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10544"}],"version-history":[{"count":0,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/posts\/10544\/revisions"}],"wp:attachment":[{"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10544"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10544"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10544"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}