Third-order generalized Van Vleck perturbation theory study of the ground and lowest excited states of C2

2006 ◽  
Vol 771 (1-3) ◽  
pp. 73-78 ◽  
Author(s):  
Wanyi Jiang ◽  
Yuriy G. Khait ◽  
Mark R. Hoffmann
Keyword(s):  
Perturbation Theory ◽  
Excited States ◽  
Third Order ◽  
Van Vleck

Generalized van Vleck Perturbation Theory (GVVPT2) Study of the Excited States of Benzene and the Azabenzenes

2008 ◽  
Vol 112 (12) ◽  
pp. 2677-2682 ◽  
Author(s):  
Ajitha Devarajan ◽  
Alexander V. Gaenko ◽  
Yuri G. Khait ◽  
Mark R. Hoffmann
Keyword(s):  
Perturbation Theory ◽  
Excited States ◽  
Van Vleck

On the accuracy of the general, state-specific polarizable-continuum model for the description of correlated ground- and excited states in solution

2017 ◽  
Vol 19 (2) ◽  
pp. 1644-1654 ◽  
Author(s):  
Jan-Michael Mewes ◽  
John M. Herbert ◽  
Andreas Dreuw
Keyword(s):  
Perturbation Theory ◽  
Excited State ◽  
Excited States ◽  
Continuum Model ◽  
Polarizable Continuum Model ◽  
The State ◽  
General State ◽  
Third Order ◽  
State Densities ◽  
Polarizable Continuum

Equilibrium and non-equilibrium formulations of the state-specific PCM are evaluated in combination with correlated ground- and excited-state densities provided by ADC/ISR approach of up to third order of perturbation theory.

scholarly journals The axion-baryon coupling in SU(3) heavy baryon chiral perturbation theory

2021 ◽  
Vol 2021 (8) ◽  
Author(s):  
Thomas Vonk ◽  
Feng-Kun Guo ◽  
Ulf-G. Meißner
Keyword(s):  
Perturbation Theory ◽  
Chiral Perturbation Theory ◽  
Heavy Baryon ◽  
Power Counting ◽  
Flavor Symmetry ◽  
Chiral Perturbation ◽  
Third Order ◽  
Stellar Objects ◽  
The Past ◽  
Dense Nuclear Matter

Abstract In the past, the axion-nucleon coupling has been calculated in the framework of SU(2) heavy baryon chiral perturbation theory up to third order in the chiral power counting. Here, we extend these earlier studies to the case of heavy baryon chiral perturbation theory with SU(3) flavor symmetry and derive the axion coupling to the full SU(3) baryon octet, showing that the axion also significantly couples to hyperons. As studies on dense nuclear matter suggest the possible existence of hyperons in stellar objects such as neutron stars, our results should have phenomenological implications related to the so-called axion window.

Low-Lying Excited States of C120 and C151: A Multireference Perturbation Theory Study

2010 ◽  
Vol 114 (47) ◽  
pp. 12363-12368 ◽  
Author(s):  
Tetsuya Sakata ◽  
Yukio Kawashima ◽  
Haruyuki Nakano
Keyword(s):  
Perturbation Theory ◽  
Excited States ◽  
Multireference Perturbation Theory
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