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1
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77956708000
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and references therein
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D.S. Chemla, Semicond. Semimetals 58, 175 (1999), and references therein.
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(1999)
Semicond. Semimetals
, vol.58
, pp. 175
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Chemla, D.S.1
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7
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0032484439
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L. Huang, J.P. Callan, E.N. Glezer, and E. Mazur, Phys. Rev. Lett. 80, 185 (1998); J.P. Callan, A.M.T. Kim, L. Huang, and E. Mazur, Chem. Phys. 251, 167 (2000).
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(1998)
Phys. Rev. Lett.
, vol.80
, pp. 185
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Huang, L.1
Callan, J.P.2
Glezer, E.N.3
Mazur, E.4
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8
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0034405542
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L. Huang, J.P. Callan, E.N. Glezer, and E. Mazur, Phys. Rev. Lett. 80, 185 (1998); J.P. Callan, A.M.T. Kim, L. Huang, and E. Mazur, Chem. Phys. 251, 167 (2000). See also the review paper, S.K. Sundrum and E. Mazur, Nat. Mater. 1, 217 (2002).
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(2000)
Chem. Phys.
, vol.251
, pp. 167
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Callan, J.P.1
Kim, A.M.T.2
Huang, L.3
Mazur, E.4
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9
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0036979673
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L. Huang, J.P. Callan, E.N. Glezer, and E. Mazur, Phys. Rev. Lett. 80, 185 (1998); J.P. Callan, A.M.T. Kim, L. Huang, and E. Mazur, Chem. Phys. 251, 167 (2000). See also the review paper, S.K. Sundrum and E. Mazur, Nat. Mater. 1, 217 (2002).
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(2002)
Nat. Mater.
, vol.1
, pp. 217
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Sundrum, S.K.1
Mazur, E.2
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13
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33646665855
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note
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The physics of electron-hole interaction is left out of this treatment since we focus our attention on the one-particle Green function. For a discussion of such two-particle effects in highly excited GaAs, see Ref. 9.
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15
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0000452993
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L.V. Keldysh, J. Exp. Theor. Phys. 47, 1515 (1964) [Sov. Phys. JETP 20, 1018 (1965)].
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(1965)
Sov. Phys. JETP
, vol.20
, pp. 1018
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17
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33646667759
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note
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In the equilibrium problem at T = 0, in which one is interested in ground-state expectation values, the contour can extend from t = - ∞ to t = + ∞ because the adiabatic turning-on and-off of the interaction is guaranteed to return the system to its (noninteracting) ground state. This is not true of excited states. For equilibrium problems with T > 0, the Wick rotation affected in the Matsubara treatment renders the problem essentially isomorphic to that of T = 0. For a detailed discussion of equilibrium and non-equilibrium many-body perturbation theoretic techniques, see L. P. Kadanoff and G. Baym, Quantum Statistical Mechanics (W. A. Benjamin, New York, 1962).
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25
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33646641626
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note
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We stress that the occupation number distribution f(E) entering our calculation is assumed rather than calculated. In principle, f(E) should be determined self-consistently, but the computational rigors of such a calculation preclude us from doing this here. The f(E) is therefore an input to our calculation of handgap renormalization.
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26
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33646638502
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note
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At larger times, changes in the dielectric function were observed, and are believed to be signatures of a nonthermal structural transformation to a metallic amorphous state.
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