{"id":19833,"date":"2014-12-29T00:15:23","date_gmt":"2014-12-28T16:15:23","guid":{"rendered":"https:\/\/case.ntu.edu.tw\/blog\/?p=19833"},"modified":"2017-07-25T10:39:46","modified_gmt":"2017-07-25T02:39:46","slug":"%e3%80%90%e7%89%a9%e7%90%86%e7%a0%94%e7%a9%b6%e3%80%91%e6%b6%88%e5%a4%b1%e7%84%a1%e8%b9%a4%e7%9a%84bec","status":"publish","type":"post","link":"https:\/\/case.ntu.edu.tw\/blog\/?p=19833","title":{"rendered":"\u3010\u7269\u7406\u7814\u7a76\u3011\u6d88\u5931\u7121\u8e64\u7684BEC"},"content":{"rendered":"

\u25a0\u4e00\u7fa4\u7f8e\u570b\u79d1\u5b78\u5bb6\u5229\u7528\u73bb\u8272\u611b\u56e0\u65af\u5766\u51dd\u805a\u614b(BEC)\u4f86\u7814\u7a76\u4ee5\u7269\u8cea\u6ce2\u6240\u5f62\u6210\u7684\u5b64\u7acb\u6ce2\u3002\u4ed6\u5011\u767c\u73fe\u5728\u7279\u5b9a\u60c5\u5f62\u4e0b\uff0c\u7576\u5169\u500b\u7269\u8cea\u6ce2\u6240\u5f62\u6210\u7684\u5b64\u7acb\u6ce2\u767c\u751f\u5c0d\u649e\uff0c\u73bb\u8272\u611b\u56e0\u65af\u5766\u51dd\u805a\u614b\u6703\u5ffd\u7136\u6d88\u5931\u3002<\/strong><\/span><\/p>\n

\"\u5716\u7247\u4f86\u6e90\uff5cphysicsworld.com\/\"
\u5716\u7247\u4f86\u6e90\uff5cphysicsworld.com\/<\/figcaption><\/figure>\n

\u64b0\u6587\uff5c<\/strong>\u9673\u52c1\u8c6a<\/p>\n

\u539f\u5b50\u6839\u64da\u6240\u5e36\u7684\u81ea\u65cb\uff0c\u53ef\u4ee5\u5206\u70ba\u81ea\u65cb\u70ba\u6574\u6578\u7684\u73bb\u8272\u5b50\u8207\u81ea\u65cb\u70ba\u534a\u6574\u6578\u7684\u8cbb\u7c73\u5b50\u3002\u7576\u4e00\u7fa4\u5e36\u6709\u6574\u6578\u81ea\u65cb\u7684\u539f\u5b50\u51b7\u51cd\u5230\u6975\u4f4e\u6eab\u7684\u6642\u5019\uff0c\u5b83\u5011\u6703\u5f62\u6210\u73bb\u8272\u611b\u56e0\u65af\u5766\u51dd\u805a\u614b(Bose-Einstein condensation, BEC)\u3002\u9019\u6642\u9019\u500bBEC\u53ef\u4ee5\u88ab\u8996\u70ba\u662f\u9019\u7fa4\u539f\u5b50\u7684\u96c6\u5408\u9ad4\uff0c\u6216\u8005\u662f\u770b\u6210\u4e00\u500b\u5de8\u89c0\u7684\u7269\u8cea\u6ce2\u3002<\/p>\n

\u5b64\u7acb\u6ce2(soliton)\u662f\u6307\u7279\u6b8a\u7684\u6ce2\u5305(wave packet)\uff0c\u53ef\u4ee5\u50b3\u905e\u5230\u76f8\u7576\u9577\u7684\u8ddd\u96e2\u800c\u4e0d\u6703\u6539\u8b8a\u5176\u5f62\u72c0\u6216\u662f\u6e1b\u5f31\u3002\u5b64\u7acb\u6ce2\u6700\u65e9\u662f\u5728\u6c34\u6ce2\u4e2d\u88ab\u767c\u73fe\uff0c\u4f46\u662f\u5728\u8a31\u591a\u6ce2\u52d5\u65b9\u7a0b\u5f0f\u4e2d\u90fd\u6709\u5b64\u7acb\u6ce2\u7684\u5b58\u5728\uff0c\u4f8b\u5982\u67d0\u4e9b\u7279\u5225\u7684\u4e00\u7dad\u975e\u7dda\u6027\u859b\u4e01\u683c\u65b9\u7a0b\u5f0f\u4e2d\u3002\u9019\u500b\u60c5\u6cc1\u525b\u597d\u53ef\u4ee5\u5229\u7528\u5728\u88ab\u9650\u5236\u5728\u72f9\u9577\u7ba1\u72c0\u7a7a\u9593\u4e2d\u7684BEC\u3002<\/p>\n

\u7f8e\u570bRice\u5927\u5b78\u7684Randy Hulet\u53ca\u4e00\u7fa4\u4ee5\u8272\u5217\u53ca\u6fb3\u6d32\u7684\u7814\u7a76\u4eba\u54e1\u6c7a\u5b9a\u5229\u7528BEC\u6240\u7522\u751f\u7684\u7269\u8cea\u6ce2\u4f86\u88fd\u9020\u5b64\u7acb\u6ce2\uff0c\u9032\u800c\u7814\u7a76\u7269\u8cea\u5b64\u7acb\u6ce2\u7684\u6027\u8cea\u3002\u4ed6\u5011\u9996\u5148\u7528\u92f0-7\u539f\u5b50\u4f86\u88fd\u9020BEC\uff0c\u4e26\u5c07\u9019\u5718BEC\u653e\u5165\u7d30\u9577\u7ba1\u72c0\u5bb9\u5668\u4e2d\u3002\u63a5\u8457\u4ed6\u5011\u7528\u96f7\u5c04\u628a\u9019\u5718BEC\u5206\u6210\u76f8\u9694\u7d0426\u5fae\u7c73\u7684\u5169\u534a\uff0c\u4e26\u8b93\u9019\u5169\u4efdBEC\u5404\u81ea\u5f62\u6210\u5b64\u7acb\u6ce2\uff0c\u6700\u5f8c\u8b93\u9019\u5169\u500b\u5b64\u7acb\u6ce2\u76f8\u4e92\u5438\u5f15\u4e26\u9032\u884c\u5c0d\u649e\u3002<\/p>\n

\u5728\u5927\u591a\u6578\u7684\u60c5\u5f62\u4e0b\uff0c\u4ed6\u5011\u767c\u73fe\u9019\u5169\u500b\u7531BEC\u6240\u5f62\u6210\u7684\u5b64\u7acb\u6ce2\u5c31\u8ddf\u4e00\u822c\u7684\u5b64\u7acb\u6ce2\u4e00\u6a23\uff0c\u5b83\u5011\u6703\u7a7f\u904e\u5f7c\u6b64\uff0c\u7136\u5f8c\u7e7c\u7e8c\u524d\u9032\u3002\u7576\u9019\u5169\u500b\u5b64\u7acb\u6ce2\u78b0\u649e\u7684\u6642\u5019\uff0c\u5b83\u5011\u4e4b\u9593\u7684\u76f8\u4f4d\u5dee\u6703\u8868\u73fe\u5728\u78b0\u649e\u6642\u5169\u500b\u6ce2\u7684\u758a\u52a0\u614b\u4e0a\u3002\u4f8b\u5982\uff0c\u7576\u5169\u500b\u5b64\u7acb\u6ce2\u7684\u76f8\u4f4d\u4e00\u81f4\u7684\u6642\u5019\uff0c\u5169\u500b\u5b64\u7acb\u6ce2\u6703\u7522\u751f\u758a\u52a0\u6027\u5e72\u6d89\u3002<\/p>\n

\u4f46\u662f\u7814\u7a76\u4eba\u54e1\u767c\u73fe\uff0c\u5728\u67d0\u4e9b\u7279\u5225\u7684\u60c5\u5f62\u4e0b\uff0c\u9019\u5169\u500b\u5b64\u7acb\u6ce2\u76f8\u4e92\u78b0\u649e\u7684\u6642\u5019\uff0c\u6703\u8b93\u6574\u7fa4BEC\u76f4\u63a5\u6d88\u5931\u5d29\u89e3\u3002\u9019\u500b\u60c5\u5f62\u767c\u751f\u5728\u5169\u500b\u5b64\u7acb\u6ce2\u5e7e\u4e4e\u5177\u6709\u76f8\u540c\u76f8\u4f4d\u7684\u6642\u5019\u3002\u9019\u500b\u60c5\u5f62\u4e26\u4e0d\u5b58\u5728\u65bc\u4e00\u7dad\u975e\u7dda\u6027\u859b\u4e01\u683c\u65b9\u7a0b\u5f0f\u7684\u5b64\u7acb\u6ce2\u89e3\u4e2d\uff0c\u6240\u4ee5\u8b93\u7814\u7a76\u4eba\u54e1\u76f8\u7576\u610f\u5916\u3002\u4ed6\u5011\u8a8d\u70ba\uff0c\u6709\u53ef\u80fd\u662f\u56e0\u70ba\u5169\u500b\u5b64\u7acb\u6ce2\u540c\u8abf\u758a\u52a0\uff0c\u8b93\u6574\u500b\u7cfb\u7d71\u7684\u539f\u5b50\u5bc6\u5ea6\u904e\u9ad8\uff0c\u56e0\u6b64\u5f9e\u4e00\u7dad\u7684\u7cfb\u7d71\u81a8\u8139\u5230\u985e\u4f3c\u4e09\u7dad\u7684\u60c5\u5f62\uff0c\u56e0\u6b64\u9020\u6210\u5b64\u7acb\u6ce2\u53caBEC\u7684\u5d29\u89e3\u3002<\/p>\n

Hulet\u53ca\u4ed6\u7684\u7814\u7a76\u5718\u968a\u5e0c\u671b\u80fd\u5920\u5c0d\u9019\u500b\u73fe\u8c61\u505a\u66f4\u9032\u4e00\u6b65\u7684\u4e86\u89e3\uff0c\u5305\u62ec\u66f4\u7cbe\u78ba\u7684\u7814\u7a76\u5169\u500b\u5b64\u7acb\u6ce2\u8207\u76f8\u4f4d\u4e4b\u9593\u7684\u95dc\u4fc2\uff0c\u5df2\u78ba\u5be6\u4e86\u89e3\u5b64\u7acb\u6ce2\u5d29\u89e3\u7684\u539f\u56e0\u3002\u66f4\u9577\u671f\u7684\u76ee\u6a19\u5c07\u53ef\u80fd\u662f\u5229\u7528\u9019\u7a2e\u5b64\u7acb\u6ce2\u4f86\u8a2d\u8a08\u7269\u8cea\u6ce2\u7684\u5e72\u6d89\u5100\u3002<\/p>\n

\u539f\u59cb\u8ad6\u6587\uff1a<\/strong>
\nCollisions of matter-wave solitons
\nNature Physics (2014)
\ndoi:10.1038\/nphys3135
\n\u53c3\u8003\u8cc7\u6599\uff1a<\/strong>
\nPhysics World 2014\/11\/06: Colliding Bose-Einstein condensates vanish from sight<\/a>
\nPhys.org 2014\/11\/02: Ultracold disappearing act: 'Matter waves' move through one another but never share space<\/a><\/p>\n

--<\/strong><\/span>
\n \u4f5c\u8005\uff1a\u9673\u52c1\u8c6a\u3000\u79d1\u6559\u4e2d\u5fc3\u7279\u7d04\u5beb\u624b\uff0c\u5f9e\u4e8b\u79d1\u666e\u6587\u7ae0\u5beb\u4f5c\u30022011\u5e74\u65bc\u7f8e\u570b\u7d10\u7d04\u5dde\u7acb\u77f3\u6eaa\u5927\u5b78(SUNY at Stony Brook)\u53d6\u5f97\u535a\u58eb\u5b78\u4f4d\uff0c\u7814\u7a76\u4e3b\u984c\u70ba\u76f8\u5c0d\u8ad6\u6027\u91cd\u96e2\u5b50\u78b0\u649e(Relativistic Heavy Ion Collision)\u3002\u9577\u671f\u64d4\u4efb\u4e2d\u6587\u79d1\u5b78\u65b0\u805e\u7db2\u7ad9\u300c\u79d1\u666f\u300d\uff08Sciscape.org\uff09\u7e3d\u7de8\u8f2f\u3002<\/strong><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

\u25a0\u4e00\u7fa4\u7f8e\u570b\u79d1\u5b78\u5bb6\u5229\u7528\u73bb\u8272\u611b\u56e0\u65af\u5766\u51dd\u805a\u614b(<\/p>\n","protected":false},"author":20,"featured_media":19836,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3293,39],"tags":[1537,1309,1538,2250,1536,1535],"aioseo_notices":[],"jetpack_featured_media_url":"https:\/\/case.ntu.edu.tw\/blog\/wp-content\/uploads\/2014\/12\/PW-2014-11-06-Wogan-becks.jpg","_links":{"self":[{"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=\/wp\/v2\/posts\/19833"}],"collection":[{"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=\/wp\/v2\/users\/20"}],"replies":[{"embeddable":true,"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=19833"}],"version-history":[{"count":6,"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=\/wp\/v2\/posts\/19833\/revisions"}],"predecessor-version":[{"id":28745,"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=\/wp\/v2\/posts\/19833\/revisions\/28745"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=\/wp\/v2\/media\/19836"}],"wp:attachment":[{"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=19833"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=19833"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=19833"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}