scholarly journals Planck's Radiation Law: A Many Body Theory Perspective

1996 ◽  
Vol 49 (3) ◽  
pp. 589 ◽  
Author(s):  
PM Derlet ◽  
TC Choy
Keyword(s):  
Refractive Index ◽  
Optical Properties ◽  
Perturbation Theory ◽  
Interaction Mechanism ◽  
Matter Field ◽  
Many Body ◽  
Precise Nature ◽  
Many Body Theory ◽  
Planck’S Law ◽  
Body Theory

An exposition of Planck's Law of Radiation is presented within the context of modern quantum many body theory. In particular the generality of the Planck radiation law is demonstrated to be Valid to all orders of perturbation theory for an interacting system, regardless of the underlying statistics for the particles comprising the matter field and the precise nature of the interaction mechanism. This exposition justifies the use of Planck's law with minor modifications via the refractive index, in the optical properties of semiconductors and insulators. We conclude by clarifying when Planck's law is likely to fail.

Many-Body Calculations of Dynamic Polarizability, Refractive Index and Verdet Coefficient

2006 ◽  
Vol 518 ◽  
pp. 331-336 ◽  
Author(s):  
A.R. Tančić ◽  
M. Davidović
Keyword(s):  
Refractive Index ◽  
Random Phase Approximation ◽  
Random Phase ◽  
Time Dependent ◽  
New Materials ◽  
Many Body ◽  
Dynamic Polarizability ◽  
Many Body Theory ◽  
The Many ◽  
Body Theory

Within the framework of the many-body theory by using the Random Phase Approximation with Exchange (RPAE) method we calculated the frequency dependent polarizability, refractive index, and Verdet coefficient of some atoms. Calculated time-dependent peculiarities of a set of atoms are very significant in the nano-region and might be important for designing new materials.

Many-body theory applied to optical properties of silicon surfaces

1999 ◽  
Vol 121-122 ◽  
pp. 711
Author(s):  
C.H. Patterson ◽  
C.D. Hogan ◽  
M. Nicastro
Keyword(s):  
Optical Properties ◽  
Silicon Surfaces ◽  
Many Body ◽  
Many Body Theory ◽  
Body Theory

The scattering of light. II. The complex refractive index of a molecular fluid

1987 ◽  
Vol 321 (1559) ◽  
pp. 305-360 ◽  
Keyword(s):  
Refractive Index ◽  
Complex Refractive Index ◽  
Pair Potential ◽  
Many Body ◽  
Effective Polarizability ◽  
Reaction Field ◽  
Many Body Theory ◽  
The Many ◽  
Molecular Resonance ◽  
Body Theory

We treat the complex refractive index of a finite molecular fluid on the basis of a classical many-body theory; the surface problem is handled through surfacedependent propagators. We develop a density expansion generalizing the Lorentz-Lorenz relation and sum all two-body terms to a closed form with intermolecular correlations determined by a Lennard-Jones pair potential; the dependence on density, temperature and frequency is discussed and the case when the frequency is near a molecular resonance is considered. The refractive index and the extinction coefficient are compared with experiments for gases. We also derive a generalization of the macroscopic relation of Onsager and Bottcher from the many-body theory, essentially as an expansion in an effective polarizability of a molecule in the many-body system. Exact microscopic expressions for an effective polarizability and for a reaction field are identified, and it is shown that they are related like the Bottcher polarizability and the Onsager reaction field in a well-defined decorrelation approximation. The relation with, and validity of, the macroscopic formulae of Lorentz and Bottcher are analysed in depth.

On the many-body theory of nuclear reactions

1968 ◽  
Vol 111 (1) ◽  
pp. 392-416 ◽  
Author(s):  
K DIETRICH ◽  
K HARA
Keyword(s):  
Nuclear Reactions ◽  
Many Body ◽  
Many Body Theory ◽  
The Many ◽  
Body Theory

MANY-BODY THEORY FOR HYPERFINE EFFECTS IN ATOMS AND MOLECULES

1970 ◽  
Vol 31 (C4) ◽  
pp. C4-99-C4-104
Author(s):  
T. P. DAS ◽  
C. M. DUTTA ◽  
N. C. DUTTA
Keyword(s):  
Many Body ◽  
Atoms And Molecules ◽  
Many Body Theory ◽  
Body Theory

scholarly journals Many-body theory of radiative lifetimes of exciton-trion superposition states in doped two-dimensional materials

2021 ◽  
Vol 103 (3) ◽  
Author(s):  
Farhan Rana ◽  
Okan Koksal ◽  
Minwoo Jung ◽  
Gennady Shvets ◽  
Christina Manolatou
Keyword(s):  
Two Dimensional ◽  
Many Body ◽  
Radiative Lifetimes ◽  
Many Body Theory ◽  
Two Dimensional Materials ◽  
Superposition States ◽  
Body Theory

Test of closure approximations in equilibrium classical many‐body theory

1988 ◽  
Vol 88 (12) ◽  
pp. 7791-7798 ◽  
Author(s):  
Leslie J. Root ◽  
Frank H. Stillinger ◽  
Gary E. Washington
Keyword(s):  
Many Body ◽  
Many Body Theory ◽  
Closure Approximations ◽  
Body Theory
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