{"id":42221,"date":"2023-05-01T19:11:25","date_gmt":"2023-05-01T11:11:25","guid":{"rendered":"https:\/\/swarma.org\/?p=42221"},"modified":"2023-05-01T19:11:25","modified_gmt":"2023-05-01T11:11:25","slug":"nature-physics-%e9%80%9f%e9%80%92%ef%bc%9a%e8%87%aa%e7%84%b6%e9%9b%86%e7%be%a4%ef%bc%8c3-99%e7%bb%b4%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/swarma.org\/?p=42221","title":{"rendered":"Nature Physics \u901f\u9012\uff1a\u81ea\u7136\u96c6\u7fa4\uff0c3.99\u7ef4\uff1f"},"content":{"rendered":"
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\u8bba\u6587\u9898\u76ee\uff1aNatural swarms in 3.99 dimensions<\/span><\/section>\n
\u8bba\u6587\u6765\u6e90\uff1aNature Physics<\/em><\/span><\/section>\n
\u8bba\u6587\u94fe\u63a5\uff1ahttps:\/\/www.nature.com\/articles\/s41567-023-02028-0<\/span><\/section>\n<\/section>\n<\/section>\n<\/section>\n<\/blockquote>\n

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\u91cd\u6574\u5316\u7fa4<\/span><\/strong>\uff08renormalization group\uff0cRG\uff09<\/span>\u662f\u7edf\u8ba1\u7269\u7406\u7684\u91cd\u8981\u601d\u60f3\uff0c\u662f\u80fd\u5728\u4e0d\u540c\u5c3a\u5ea6\u4e0b\u8003\u5bdf\u7269\u7406\u7cfb\u7edf\u53d8\u5316\u7684\u6570\u5b66\u5de5\u5177\u3002\u5b83\u6709\u4e24\u4e2a\u57fa\u672c\u7279\u5f81\uff1a\u5b58\u5728\u5f3a\u5173\u8054\u548c\u670d\u4ece\u6807\u5ea6\u5f8b\u3002\u91cd\u6574\u5316\u7fa4\u53ef\u4ee5\u8ba1\u7b97\u5305\u542b\u4e0d\u540c\u7c7b\u578b\u96c6\u4f53\u7cfb\u7edf<\/span>\uff08collective systems\uff09<\/span>\u884c\u4e3a\u7684\u901a\u7528\u91cf\uff0c\u5728\u5f88\u591a\u9886\u57df\u4e2d\u88ab\u5e7f\u6cdb\u5e94\u7528\u3002<\/span><\/section>\n

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\u5728\u91cd\u6574\u5316\u7fa4\u7684\u8fc7\u7a0b\u4e2d\uff0c\u7c97\u7c92\u5316\u7684\u77ed\u6ce2\u6da8\u843d\u4f1a\u8ba9\u7cfb\u7edf\u7684\u53c2\u6570\u6d41\u5411\u5c11\u6570\u4e0d\u52a8\u70b9<\/span>\uff08fixed points\uff09<\/span>\uff0c\u8fd9\u4e9b\u4e0d\u52a8\u70b9\u51b3\u5b9a\u4e86\u7cfb\u7edf\u7684\u5b8f\u89c2\u884c\u4e3a\u3002\u56e0\u6b64\uff0c\u91cd\u6574\u5316\u7fa4\u7684\u4e0d\u52a8\u70b9\u80fd\u5c06\u5f3a\u5173\u8054\u7cfb\u7edf\u7684\u5b8f\u89c2\u884c\u4e3a\u7ec4\u7ec7\u6210\u666e\u9002\u7c7b<\/span>\uff08universality classes\uff09<\/span>\uff0c\u4ece\u800c\u53ef\u4ee5\u63d0\u4f9b\u4e34\u754c\u6307\u6570<\/span>\uff08critical exponents\uff09<\/span>\u7684\u65e0\u53c2\u6570\u9884\u6d4b\u3002<\/span><\/section>\n

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\u6700\u8fd1\u53d1\u8868\u5728 Nature Physics <\/em>\u7684\u8fd9\u7bc7\u6587\u7ae0\u5c06\u91cd\u6574\u5316\u7fa4\u7684\u9884\u6d4b\u80fd\u529b\u62d3\u5c55\u5230\u4e86\u751f\u7269\u96c6\u7fa4\u7cfb\u7edf<\/strong>\uff0c\u4ed6\u4eec\u5c06\u91cd\u6574\u5316\u7fa4\u5e94\u7528\u5230\u6606\u866b\u7fa4\u4f53\u7684\u52a8\u529b\u5b66\uff0c\u5176\u9009\u53d6\u7684\u6606\u866b\u7fa4\u8868\u73b0\u51fa\u8fd1\u4e34\u754c\u3001\u5f3a\u5173\u8054\u3001\u5177\u6709\u77ed\u7a0b\u76f8\u4e92\u4f5c\u7528\u3001\u52a8\u529b\u5b66\u4e34\u754c\u6307\u6570<\/span>\uff08dynamical critical exponent\uff09<\/span>z= 1.37 \u00b1 0.11\u3002\u4ed6\u4eec\u4f7f\u7528\u91cd\u6574\u5316\u7fa4\u7684\u9636\u6570\u4e3a \u03b5 = 4\u2212d\uff0c\u7814\u7a76\u4e2d\u4ea7\u751f\u4e86\u4e00\u4e2a\u65b0\u7684\u4e0d\u52a8\u70b9\u3002\u5728\u4e09\u7ef4\u4e2d\uff0c\u65b0\u4e0d\u52a8\u70b9\u5904\u7684\u4e34\u754c\u6307\u6570\u4e3a z = 1.35\uff0c\u4e0e\u5b9e\u9a8c\u548c\u6570\u503c\u6a21\u62df\u4e00\u81f4\u3002\u4ed6\u4eec\u8fd8\u53d1\u73b0\u53ea\u6709\u7c97\u7c92\u5316\u4f1a\u4ea7\u751f\u5f02\u5e38\u7684\u4e34\u754c\u6307\u6570\uff0c\u5f15\u8d77\u975e\u5e73\u51e1\u7684\u96c6\u4f53\u884c\u4e3a\u3002<\/span><\/section>\n

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\u8fd9\u9879\u7814\u7a76\u63a2\u7d22\u4e86\u91cd\u6574\u5316\u7fa4\u5bf9\u96c6\u4f53\u884c\u4e3a\u8fdb\u884c\u5b9a\u91cf\u63cf\u8ff0\u7684\u80fd\u529b\uff0c\u8868\u660e\u5728\u5f3a\u5173\u8054\u7684\u751f\u7269\u7cfb\u7edf\u4e2d\uff0c\u666e\u9002\u6027<\/span>\uff08universality\uff09<\/span>\u53ef\u80fd\u53d1\u6325\u51b3\u5b9a\u6027\u7684\u4f5c\u7528\u3002<\/span><\/section>\n

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\u56fe1. \u91cd\u6574\u5316\u7fa4\u6d41\u3002a. \u4fdd\u5b88\u60c5\u51b5\uff08conservative case\uff0c\u03b7 = 0\uff09\u7684\u6d41\uff1bb. \u81ea\u65cb\u8017\u6563\uff08spin dissipation\uff09\u6d41\u3002<\/span><\/p>\n


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\u56fe2. \u4e0d\u53ef\u538b\u7f29\u4e3b\u52a8\u7406\u8bba\uff08incompressible active theory\uff09\u6620\u5c04\u3002<\/span><\/section>\n

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\u751f\u547d\u590d\u6742\u6027\u7cfb\u5217\u8bfb\u4e66\u4f1a\uff1a\u4ece\u4fe1\u606f\u548c\u7269\u7406\u89c6\u89d2\u63a2\u7d22\u751f\u547d\u7684\u5185\u5728\u903b\u8f91<\/a><\/span><\/strong><\/span><\/p>\n


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\u63a8\u8350\u9605\u8bfb<\/span><\/strong><\/strong><\/p>\n

1. <\/strong>\u4eba\u8138\u548c\u5b87\u5b99\u662f\u5565\u5173\u7cfb\uff1f\u770b\u7269\u7406\u5b66\u5bb6\u600e\u6837\u7528\u91cd\u6574\u5316\u7fa4\u6d41\u6a21\u578b\u91cd\u65b0\u7406\u89e3\u89c6\u89c9<\/a><\/strong><\/span><\/strong><\/strong><\/section>\n
2.<\/strong> Nature Physics\uff1a\u91cd\u6574\u5316\u7fa4\u2014\u2014\u7406\u89e3\u5f02\u6784\u7f51\u7edc\u7684\u663e\u5fae\u955c<\/a><\/strong><\/span><\/strong><\/section>\n
3. <\/strong><\/strong>Nat. Phys.\u901f\u9012\uff1a\u5f02\u6784\u7f51\u7edc\u7684\u62c9\u666e\u62c9\u65af\u91cd\u6574\u5316\u7fa4<\/a><\/strong><\/strong><\/span><\/strong><\/strong><\/section>\n
4. \u300a\u5f20\u6c5f\u00b7\u590d\u6742\u79d1\u5b66\u524d\u6cbf27\u8bb2\u300b\u5b8c\u6574\u4e0a\u7ebf\uff01<\/strong><\/a><\/strong><\/strong><\/strong><\/section>\n
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5. \u6210\u4e3a\u96c6\u667aVIP\uff0c\u89e3\u9501\u5168\u7ad9\u8bfe\u7a0b\uff0f\u8bfb\u4e66\u4f1a<\/span><\/strong><\/a><\/strong><\/strong><\/strong><\/strong><\/section>\n
6.<\/strong><\/strong><\/strong> <\/strong><\/strong><\/strong>\u52a0\u5165\u96c6\u667a\uff0c\u4e00\u8d77\u590d\u6742\uff01<\/strong><\/a><\/strong><\/strong><\/strong><\/span><\/section>\n

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\u70b9\u51fb\u201c\u9605\u8bfb\u539f\u6587\u201d\uff0c\u62a5\u540d\u8bfb\u4e66\u4f1a<\/strong><\/span><\/strong><\/section>\n

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\u5173\u952e\u8bcd\uff1a\u96c6\u4f53\u884c\u4e3a\uff0c\u91cd\u6574\u5316\u7fa4\uff0c\u4e34\u754c\u76f8\u53d8\uff0c\u7edf\u8ba1\u7269\u7406\uff0c\u751f\u7269\u7269\u7406\u5b66 \u8bba\u6587\u9898\u76ee\uff1aNatural swarms in 3.99 dimensions \u8bba\u6587\u6765\u6e90\uff1aNature Physics \u8bba\u6587\u94fe\u63a5\uff1ahttps:\/\/www.nature.com\/articles\/s41567-023-02028-0 \u91cd\u6574\u5316\u7fa4\uff08…<\/p>\n","protected":false},"author":0,"featured_media":42214,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"special":[],"_links":{"self":[{"href":"https:\/\/swarma.org\/index.php?rest_route=\/wp\/v2\/posts\/42221"}],"collection":[{"href":"https:\/\/swarma.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/swarma.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/swarma.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=42221"}],"version-history":[{"count":0,"href":"https:\/\/swarma.org\/index.php?rest_route=\/wp\/v2\/posts\/42221\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/swarma.org\/index.php?rest_route=\/wp\/v2\/media\/42214"}],"wp:attachment":[{"href":"https:\/\/swarma.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=42221"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/swarma.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=42221"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/swarma.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=42221"},{"taxonomy":"special","embeddable":true,"href":"https:\/\/swarma.org\/index.php?rest_route=%2Fwp%2Fv2%2Fspecial&post=42221"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}