文摘
We adapt the horizon wave-function formalism to describe massive static spherically symmetric sources in a general class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316302957&_mathId=si1.gif&_user=111111111&_pii=S0370269316302957&_rdoc=1&_issn=03702693&md5=24070b7a03107dbb5069b3f97e4e79d7" title="Click to view the MathML source">(1+D)class="mathContainer hidden">class="mathCode">-dimensional space-time, for class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316302957&_mathId=si2.gif&_user=111111111&_pii=S0370269316302957&_rdoc=1&_issn=03702693&md5=aa0c5f109809616484dfbbd9c82706e5" title="Click to view the MathML source">D>3class="mathContainer hidden">class="mathCode"> and including the class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316302957&_mathId=si3.gif&_user=111111111&_pii=S0370269316302957&_rdoc=1&_issn=03702693&md5=0a0b7645e441558f540b5a314e7288be" title="Click to view the MathML source">D=1class="mathContainer hidden">class="mathCode"> case. We find that the probability class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316302957&_mathId=si4.gif&_user=111111111&_pii=S0370269316302957&_rdoc=1&_issn=03702693&md5=23b9a349fefa10ba380daef4af80a67d" title="Click to view the MathML source">PBHclass="mathContainer hidden">class="mathCode"> that such objects are (quantum) black holes behaves similarly to the probability in the class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316302957&_mathId=si5.gif&_user=111111111&_pii=S0370269316302957&_rdoc=1&_issn=03702693&md5=344915ba91b63cf2f5c0bfd154c5d46b" title="Click to view the MathML source">(3+1)class="mathContainer hidden">class="mathCode"> framework for class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316302957&_mathId=si2.gif&_user=111111111&_pii=S0370269316302957&_rdoc=1&_issn=03702693&md5=aa0c5f109809616484dfbbd9c82706e5" title="Click to view the MathML source">D>3class="mathContainer hidden">class="mathCode">. In fact, for class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316302957&_mathId=si6.gif&_user=111111111&_pii=S0370269316302957&_rdoc=1&_issn=03702693&md5=544d9ba65ea2525d2d4ccfe5adc07e7f" title="Click to view the MathML source">D≥3class="mathContainer hidden">class="mathCode">, the probability increases towards unity as the mass grows above the relevant D -dimensional Planck scale class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316302957&_mathId=si7.gif&_user=111111111&_pii=S0370269316302957&_rdoc=1&_issn=03702693&md5=ce5bf93fdaa6dd94367a24266290a8e7" title="Click to view the MathML source">mDclass="mathContainer hidden">class="mathCode">. At fixed mass, however, class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316302957&_mathId=si4.gif&_user=111111111&_pii=S0370269316302957&_rdoc=1&_issn=03702693&md5=23b9a349fefa10ba380daef4af80a67d" title="Click to view the MathML source">PBHclass="mathContainer hidden">class="mathCode"> decreases with increasing D , so that a particle with mass class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316302957&_mathId=si8.gif&_user=111111111&_pii=S0370269316302957&_rdoc=1&_issn=03702693&md5=d112d0e0428cca4223a522603edfd4c9" title="Click to view the MathML source">m≃mDclass="mathContainer hidden">class="mathCode"> has just about class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316302957&_mathId=si9.gif&_user=111111111&_pii=S0370269316302957&_rdoc=1&_issn=03702693&md5=f3b721b3cb2044f4b4c6fee7853fbef5" title="Click to view the MathML source">10%class="mathContainer hidden">class="mathCode"> probability to be a black hole in class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316302957&_mathId=si10.gif&_user=111111111&_pii=S0370269316302957&_rdoc=1&_issn=03702693&md5=1c8e80e2fc675475665f46ebca88b635" title="Click to view the MathML source">D=5class="mathContainer hidden">class="mathCode">, and smaller for larger D . This result has a potentially strong impact on estimates of black hole production in colliders. In contrast, for class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316302957&_mathId=si3.gif&_user=111111111&_pii=S0370269316302957&_rdoc=1&_issn=03702693&md5=0a0b7645e441558f540b5a314e7288be" title="Click to view the MathML source">D=1class="mathContainer hidden">class="mathCode">, we find the probability is comparably larger for smaller masses, but class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316302957&_mathId=si11.gif&_user=111111111&_pii=S0370269316302957&_rdoc=1&_issn=03702693&md5=9206b393363a61fd259b95233782de71" title="Click to view the MathML source">PBH<0.5class="mathContainer hidden">class="mathCode">, suggesting that such lower dimensional black holes are purely quantum and not classical objects. This result is consistent with recent observations that sub-Planckian black holes are governed by an effective two-dimensional gravitation theory. Lastly, we derive Generalised Uncertainty Principle relations for the black holes under consideration, and find a minimum length corresponding to a characteristic energy scale of the order of the fundamental gravitational mass class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316302957&_mathId=si7.gif&_user=111111111&_pii=S0370269316302957&_rdoc=1&_issn=03702693&md5=ce5bf93fdaa6dd94367a24266290a8e7" title="Click to view the MathML source">mDclass="mathContainer hidden">class="mathCode"> in class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316302957&_mathId=si2.gif&_user=111111111&_pii=S0370269316302957&_rdoc=1&_issn=03702693&md5=aa0c5f109809616484dfbbd9c82706e5" title="Click to view the MathML source">D>3class="mathContainer hidden">class="mathCode">. For class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269316302957&_mathId=si3.gif&_user=111111111&_pii=S0370269316302957&_rdoc=1&_issn=03702693&md5=0a0b7645e441558f540b5a314e7288be" title="Click to view the MathML source">D=1class="mathContainer hidden">class="mathCode"> we instead find the uncertainty due to the horizon fluctuations has the same form as the usual Heisenberg contribution, and therefore no fundamental scale exists.