{"id":4818,"date":"2010-02-16T09:26:19","date_gmt":"2010-02-16T09:26:19","guid":{"rendered":"https:\/\/chanhkien.org\/?p=4818"},"modified":"2025-05-12T10:28:48","modified_gmt":"2025-05-12T03:28:48","slug":"tien-bo-trong-nghien-cuu-khong-gian-da-chieu-cac-lo-den-nho","status":"publish","type":"post","link":"https:\/\/chanhkien.org\/2010\/02\/tien-bo-trong-nghien-cuu-khong-gian-da-chieu-cac-lo-den-nho.html","title":{"rendered":"Ti\u1ebfn b\u1ed9 trong nghi\u00ean c\u1ee9u kh\u00f4ng gian \u0111a chi\u1ec1u: C\u00e1c l\u1ed7 \u0111en nh\u1ecf"},"content":{"rendered":"<p><strong>[Chanhkien.org]<\/strong> M\u00f4 t\u1ea3 c\u1ed5 \u0111i\u1ec3n c\u1ee7a m\u1ed9t l\u1ed7 \u0111en l\u00e0 m\u1ed9t th\u1ef1c th\u1ec3 m\u00e0u \u0111en kh\u1ed5ng l\u1ed3 xa x\u00f4i, r\u1ea5t xa, tham lam nu\u1ed1t ch\u1eedng b\u1ea5t c\u1ee9 v\u1eadt ch\u1ea5t n\u00e0o th\u1eadm ch\u00ed l\u00e0 \u00e1nh s\u00e1ng \u0111\u1ebfn g\u1ea7n n\u00f3. V\u00e0i nh\u00e0 v\u1eadt l\u00fd \u0111\u01b0a ra c\u00e1c gi\u1ea3 thuy\u1ebft v\u1ec1\u00a0 kh\u1ea3 n\u0103ng c\u1ee7a c\u00e1c d\u1ea1ng th\u1ee9c kh\u00e1c nhau c\u1ee7a nh\u1eefng l\u1ed7 \u0111en. Nh\u1eefng phi\u00ean b\u1ea3n c\u1ee7a nh\u1eefng l\u1ed7 \u0111en c\u1ef1c k\u1ef3 nh\u1ecf c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u1ea1o ngay tr\u00ean \u0111\u1ea7u ch\u00fang ta khi c\u00e1c tia v\u0169 tr\u1ee5 \u0111\u1eadp v\u00e0o c\u00e1c nguy\u00ean t\u1eed v\u00e0 ph\u00e2n t\u1eed trong kh\u00ed quy\u1ec3n. C\u00e1c l\u1ed7 \u0111en m\u1edbi \u0111\u01b0\u1ee3c t\u1ea1o ra sau \u0111\u00f3 s\u1ebd nhanh ch\u00f3ng ph\u00e2n r\u00e3, d\u1ed9i nh\u01b0 m\u01b0a c\u00e1c h\u1ea1t th\u1ee9 c\u1ea5p xu\u1ed1ng h\u00e0nh tinh c\u1ee7a ch\u00fang ta v\u00e0 c\u01b0 d\u00e2n c\u1ee7a n\u00f3.<\/p>\n<p>N\u1ebfu s\u1ef1 t\u1ed3n t\u1ea1i c\u1ee7a c\u00e1c l\u1ed7 \u0111en nh\u1ecf \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn, n\u00f3 s\u1ebd ch\u1ee9ng minh m\u1ed9t trong c\u00e1c \u00fd t\u01b0\u1edfng l\u1ea1 l\u00f9ng hi\u1ec7n \u0111ang l\u01b0u h\u00e0nh trong c\u1ed9ng \u0111\u1ed3ng v\u1eadt l\u00fd, \u0111\u00f3 l\u00e0, ch\u00fang ta \u0111ang s\u1ed1ng trong m\u1ed9t v\u0169 tr\u1ee5 v\u1edbi c\u00e1c chi\u1ec1u kh\u00f4ng gian \u0111\u01b0\u1ee3c d\u00f2 t\u00ecm th\u1ea5y ngo\u00e0i 3 chi\u1ec1u kh\u00f4ng gian v\u00e0 m\u1ed9t chi\u1ec1u th\u1eddi gian m\u00e0 ch\u00fang ta quen thu\u1ed9c.<\/p>\n<p>T\u1eeb nh\u1eefng n\u0103m 1970, m\u1ed1i quan t\u00e2m khoa h\u1ecdc trong c\u00e1c kh\u00f4ng gian kh\u00e1c l\u00ean cao khi c\u00e1c nh\u00e0 v\u1eadt l\u00fd ph\u00e1t tri\u1ec3n l\u00fd thuy\u1ebft d\u00e2y. Nh\u01b0ng c\u00e1c kh\u00f4ng gian \u0111\u00f3 th\u00ec nh\u1ecf \u0111\u1ebfn n\u1ed7i ch\u00fang ta kh\u00f4ng th\u1ec3 ki\u1ec3m \u0111\u1ecbnh b\u1eafng nh\u1eefng ph\u01b0\u01a1ng ph\u00e1p hi\u1ec7n t\u1ea1i. B\u1ed1n n\u0103m tr\u01b0\u1edbc, 3 nh\u00e0 l\u00fd thuy\u1ebft \u0111\u00e3 \u0111\u1ec1 xu\u1ea5t m\u1ed9t \u00fd t\u01b0\u1edfng t\u00e1o b\u1ea1o. Savas Dimopuolos c\u1ee7a \u0110\u1ea1i h\u1ecdc Stanford v\u00e0 c\u00e1c \u0111\u1ed3ng nghi\u1ec7p c\u1ee7a anh ta \u0111\u00e3 cho r\u1eb1ng c\u00e1c kh\u00f4ng gian kh\u00e1c \u0111\u00f3 th\u00ec kh\u00f4ng nh\u1ecf. M\u1ed9t kh\u00f4ng gian kh\u00e1c c\u00f3 th\u1ec3 th\u1eadm ch\u00ed l\u1edbn nh\u01b0 m\u1ed9t b\u00e1n k\u00ednh 1 mm. Gi\u1ea3 thuy\u1ebft n\u00e0y kh\u00f4ng nh\u1eefng d\u1ea5y l\u00ean kh\u1ea3 n\u0103ng t\u1ed3n t\u1ea1i c\u1ee7a nh\u1eefng l\u1ed7 \u0111en r\u1ea5t nh\u1ecf, m\u00e0 c\u00f2n \u0111\u1ea3m b\u1ea3o m\u1ed9t c\u00e1ch th\u1ee9c ki\u1ec3m \u0111\u1ecbnh [s\u1ef1 t\u1ed3n t\u1ea1i] c\u00e1c kh\u00f4ng gian kh\u00e1c. Trong c\u00e1c kh\u00f4ng gian kh\u00e1c l\u1edbn v\u1eeba ph\u1ea3i, l\u1ef1c h\u00fat s\u1ebd m\u1ea1nh h\u01a1n v\u00e0 s\u1ebd l\u00e0m n\u00e9n c\u00e1c v\u1eadt ch\u1ea5t v\u00e0 n\u0103ng l\u01b0\u1ee3ng v\u00e0o trong c\u00e1c l\u1ed7 \u0111en nh\u1ecf. N\u1ebfu th\u1ef1c s\u1ef1 m\u1ed9t l\u1ed7 \u0111en nh\u1ecf \u0111\u01b0\u1ee3c kh\u00e1m ph\u00e1, n\u00f3 s\u1ebd ch\u1ee9ng minh s\u1ef1 t\u1ed3n t\u1ea1i c\u1ee7a c\u00e1c kh\u00f4ng gian kh\u00e1c.<\/p>\n<p>V\u00e0i nh\u00e0 nghi\u00ean c\u1ee9u \u0111ang ghi l\u1ea1i d\u1ea5u hi\u1ec7u c\u1ee7a c\u00e1c l\u1ed7 \u0111en nh\u1ecf. <span id=\"result_box\"><span title=\"This was initially  accomplished by  searching for distinctive particle showers that would be triggered by  any miniature black holes in the atmosphere.\">\u0110i\u1ec1u n\u00e0y b\u01b0\u1edbc \u0111\u1ea7u \u0111\u00e3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1eb1ng c\u00e1ch nghi\u00ean c\u1ee9u c\u00e1c h\u1ea1t nh\u1ecf ri\u00eang bi\u1ec7t m\u00e0 \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t b\u1edfi b\u1ea5t k\u1ef3 l\u1ed7 \u0111en nh\u1ecf trong kh\u00ed quy\u1ec3n. <\/span><\/span>Feng c\u1ee7a MIT v\u00e0 \u0111\u1ed3ng s\u1ef1 c\u1ee7a \u00f4ng \u0111\u00e3 t\u00ednh to\u00e1n t\u1ef7 l\u1ec7 vi\u1ec7c sinh ra l\u1ed7 \u0111en trong kh\u00ed quy\u1ec3n t\u1eeb c\u00e1c tia v\u0169 tr\u1ee5. C\u00e1c tia v\u0169 tr\u1ee5 s\u1ebd sinh ra m\u1ed9t v\u00e0i l\u1ed7 \u0111en trong kh\u00ed quy\u1ec3n \u1edf v\u00e0i n\u01a1i trong kh\u00ed quy\u1ec3n tr\u00e1i \u0111\u1ea5t trong m\u1ed7i ph\u00fat. \u0110i\u1ec1u n\u00e0y \u0111\u01b0\u1ee3c b\u00e1o c\u00e1o trong \u201cPhysical Review Letters,\u201d ng\u00e0y 14 th\u00e1ng 2 n\u0103m 2002. M\u1ed9t m\u00e1y d\u00f2 tia v\u0169 tr\u1ee5 m\u1edbi kh\u1ed5ng l\u1ed3, g\u1ecdi l\u00e0 &#8216;\u0110\u00e0i quan s\u00e1t th\u0103m d\u00f2 perre&#8217;, hi\u1ec7n nay \u0111ang \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng \u1edf Argentina \u0111\u1ec3 ki\u1ec3m \u0111\u1ecbnh c\u00e1c l\u1ed7 \u0111en nh\u1ecf.<\/p>\n<p>C\u00e1c nh\u00e0 v\u1eadt l\u00fd \u1edf m\u1ed9t m\u00e1y gia t\u1ed1c m\u1edbi m\u1ea1nh, m\u00e0 hy v\u1ecdng b\u1eaft \u0111\u1ea7u ho\u1ea1t \u0111\u1ed9ng trong n\u0103m 2007, s\u1ebd l\u00e0 b\u01b0\u1edbc k\u1ebf ti\u1ebfp \u0111\u1ec3 quan s\u00e1t c\u00e1c l\u1ed7 \u0111en. Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y, c\u00e1c l\u1ed7 \u0111en nh\u1ecf s\u1ebd \u0111\u01b0\u1ee3c h\u00ecnh th\u00e0nh nh\u01b0 l\u00e0 k\u1ebft qu\u1ea3 c\u1ee7a va ch\u1ea1m c\u1ee7a c\u00e1c proton v\u1edbi n\u0103ng l\u01b0\u1ee3ng c\u1ef1c cao. Ng\u00e0y 15 th\u00e1ng 10 n\u0103m 2001, trong \u201cPhysical Review Letters,\u201d Dimopoulos v\u00e0 \u0111\u1ed3ng s\u1ef1 c\u1ee7a \u00f4ng d\u1ef1 \u0111o\u00e1n m\u00e1y gia t\u1ed1c ph\u00e2n t\u1eed Hadron l\u1edbn c\u00f3 th\u1ec3 t\u1ea1o ra m\u1ed9t l\u1ed7 \u0111en m\u1ed7i gi\u00e2y. C\u00f9ng l\u00fac \u0111\u00f3, m\u1ed9t c\u1eb7p nh\u00e0 nghi\u00ean c\u1ee9u kh\u00e1c c\u0169ng \u0111i \u0111\u1ebfn k\u1ebft lu\u1eadn t\u01b0\u01a1ng t\u1ef1 [m\u1ed9t c\u00e1ch] \u0111\u1ed9c l\u1eadp.<\/p>\n<p>Hi\u1ec3u bi\u1ebft khoa h\u1ecdc hi\u1ec7n \u0111\u1ea1i v\u1ec1 c\u00e1c l\u1ed7 \u0111en nh\u1ecf v\u00e0 c\u00e1c kh\u00f4ng gian kh\u00e1c hi\u1ec7n nay th\u00ec ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 l\u00fd thuy\u1ebft. N\u00f3 th\u1eadm ch\u00ed c\u00f2n v\u01b0\u1ee3t xa tr\u00ed t\u01b0\u1edfng t\u01b0\u1ee3ng \u0111\u1ec3 hi\u1ec3u \u0111\u01b0\u1ee3c v\u1eadt ch\u1ea5t trong kh\u00f4ng gian kh\u00e1c v\u00e0 quy lu\u1eadt v\u1eadn h\u00e0nh c\u1ee7a n\u00f3. C\u00e1c kh\u00f4ng gian kh\u00e1c c\u00f3 l\u1ebd s\u1edbm tr\u1edf th\u00e0nh m\u1ed9t th\u1ef1c t\u1ebf \u0111\u01b0\u1ee3c hi\u1ec3u bi\u1ebft. \u0110i\u1ec1u n\u00e0y s\u1ebd ph\u00e1 v\u1ee1 bi\u00ean gi\u1edbi khoa h\u1ecdc hi\u1ec7n \u0111\u1ea1i, v\u00ec th\u1ebf hi\u1ec3u bi\u1ebft c\u1ee7a nh\u00e2n l\u1ecdai v\u1ec1 t\u00f2an v\u0169 tr\u1ee5 s\u1ebd thay \u0111\u1ed5i m\u1ed9t c\u00e1ch c\u01a1 b\u1ea3n.<\/p>\n<p><em><strong>Tham kh\u1ea3o:<\/strong><\/em><\/p>\n<p>1. Dimopoulos, S., v\u00e0 G. Landsberg. 2001. C\u00e1c l\u1ed7 \u0111en t\u1ea1i M\u00e1y gia t\u1ed1c Hadron c\u1ee1 l\u1edbn. Physical Review Letters 87 (Ng\u00e0y 15 th\u00e1ng 10) :e161602. T\u00f3m t\u1eaft c\u00f3 s\u1eb5n t\u1ea1i <a href=\"http:\/\/link.aps.org\/abstract\/PRL\/v87\/e161602\">http:\/\/link.aps.org\/abstract\/PRL\/v87\/e161602<\/a>.<\/p>\n<p>2. Feng, J.L., v\u00e0 A.D. Shapere. 2002. S\u1ea3n xu\u1ea5t l\u1ed7 \u0111en b\u1eb1ng tia v\u0169 tr\u1ee5. Physical Review Letters 88(Ng\u00e0y 14 th\u00e1ng 1):e021303. T\u00f3m t\u1eaft c\u00f3 s\u1eb5n t\u1ea1i <a href=\"http:\/\/link.aps.org\/abstract\/PRL\/v88\/e021303\">http:\/\/link.aps.org\/abstract\/PRL\/v88\/e021303<\/a>.<\/p>\n<p>3. Weiss, P. &#8220;L\u1ed7 \u0111en b\u00ean c\u1ea1nh&#8221;, Tin t\u1ee9c khoa h\u1ecdc t\u1eadp 161, s\u1ed1 12 (Ng\u00e0y 23 th\u00e1ng 3 n\u0103m 2002). C\u00f3 s\u1eb5n t\u1ea1i <a href=\"http:\/\/www.sciencenews.org\/20020323\/bob9.asp\">http:\/\/www.sciencenews.org\/20020323\/bob9.asp<\/a><\/p>\n<p>D\u1ecbch t\u1eeb:<\/p>\n<p><a href=\"http:\/\/www.zhengjian.org\/zj\/articles\/2002\/4\/6\/14527.html\">http:\/\/www.zhengjian.org\/zj\/articles\/2002\/4\/6\/14527.html<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>M\u00f4 t\u1ea3 c\u1ed5 \u0111i\u1ec3n c\u1ee7a m\u1ed9t l\u1ed7 \u0111en l\u00e0 m\u1ed9t th\u1ef1c th\u1ec3 m\u00e0u \u0111en kh\u1ed5ng l\u1ed3 xa x\u00f4i, r\u1ea5t xa, tham lam nu\u1ed1t ch\u1eedng b\u1ea5t c\u1ee9 v\u1eadt ch\u1ea5t n\u00e0o th\u1eadm ch\u00ed l\u00e0 \u00e1nh s\u00e1ng \u0111\u1ebfn g\u1ea7n n\u00f3.<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_sitemap_exclude":false,"_sitemap_priority":"","_sitemap_frequency":"","ngg_post_thumbnail":0,"footnotes":""},"categories":[84],"tags":[48],"class_list":["post-4818","post","type-post","status-publish","format-standard","hentry","category-vu-tru-hoc","tag-khoa-hoc-vu-tru"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - 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