上一頁下一頁
20140907_070301
20140907_070352
20140907_070411
20140907_073908
20140907_074236
20140907_080513
20140907_080657
20140907_085806
20140907_101212
20140907_150227
20140907_150239
20140907_150858
20140907_150859
20140907_151420
20140907_160409
20140907_161805
20140907_162650
20140907_165344
20140907_183841
20140907_194355
20140907_201516
20140908_072155
20140908_072205
20140908_090627
20140908_113852
20140908_114002
20140908_114012
20140908_123022
20140908_121538
20140908_123114
20140908_123204
20140908_124004
20140908_124437
20140908_124506
20140908_124637
20140908_124130
20140908_124652
20140908_131235
20140908_131820
20140908_132156
20140908_141308
20140908_141808
20140908_142727
CAM00051
CAM00057
CAM00066
CAM00083
CAM00118
CAM00095
CAM00096
CAM00097
CAM00102
CAM00123
CAM00130
CAM00144
CAM00145
上一頁下一頁
QCD exhibits two main properties:
Color confinement. This is a consequence of the constant force between two color charges as they are separated: In order to increase the separation between two quarks within a hadron, ever-increasing amounts of energy are required. Eventually, this energy becomes so great as to spontaneously produce a quark–antiquark pair, turning the initial hadron into a pair of hadrons instead of producing an isolated color charge. Although analytically unproven, color confinement is well established from lattice QCD calculations and decades of experiments.[1]
Asymptotic freedom, a steady reduction in the strength of interactions between quarks and gluons as the energy scale of those interactions increases (and the corresponding length scale decreases). The asymptotic freedom of QCD was discovered in 1973 by David Gross and Frank Wilczek,[2] and independently by David Politzer in the same year.[3] For this work, all three shared the 2004 Nobel Prize in Physics.[4]