Index
379
U
Ubbelohde effect, 312
UBS HF computing schemes, 280
UHF or UDFT computational schemes, 249
Uncertainty principle, 7, 17
Uniaxial, 288
Uniaxial tension, 276, 286, 288–290, 294, 297
Uniaxial tension of a graphene molecule, 286
Uniformly charged sphere, 101
Units, 65
Universal constants, 68
Universe models, 61
Unpaired electrons density, 276
Unrestricted broken symmetry approach, 279
Unrestricted broken symmetry (UBS)
approach, 254
Unrestricted DFT (spin polarized, UDFT), 252
Unrestricted Hartree-Fock (UHF), 252
V
Vacuum fluctuation, 58
Vacuum zero-point field, 64
Variational method, 103
Vector potential, 338
Vector-potential approach, 338
Velocity of light, 58
Vibrational heat capacity, 185
Visible-light photo-catalyst, 221, 222, 230
Vortex, 63
W
Wannier functions, 336
Wave beat, 53, 55, 58, 59, 61, 71
Wave mechanics, 53
Wave packets, 55
Weak nuclear force, 67
Wentzel-Kramers-Brillouin approximation,
162
Weyl’s theory, 162
Y
Young modulus, 288, 289, 291
Z
Zeta force, 131
Zigzag, 298
Zigzag-mode, 288, 291, 293, 295, 296, 298
Zigzag-mode deformation, 299
Zitterbewegung, 55, 61–64, 71
Zitterbewegung amplitude, 58
Zitterbewegung frequency, 58, 59