Exact wave packet dynamics of singlet fission in unsubstituted and substituted polyene chains within long-range interacting models

S Prodhan, S Ramasesha - Physical Review B, 2017 - APS
Singlet fission (SF) is a potential pathway for significant enhancement of efficiency in organic
solar cells (OSC). In this paper, we study singlet fission in a pair of polyene molecules in two …

Double time window targeting technique: Real-time DMRG dynamics in the Pariser-Parr-Pople model

T Dutta, S Ramasesha - Physical Review B—Condensed Matter and Materials …, 2010 - APS
We present a generalized adaptive time-dependent density matrix renormalization-group
(DMRG) scheme, called the double time window targeting (DTWT) technique, which gives …

Effect of dimerization on dynamics of spin-charge separation in Pariser-Parr-Pople model: A time-dependent density matrix renormalization group study

T Dutta, S Ramasesha - Physical Review B—Condensed Matter and Materials …, 2011 - APS
We investigate the effect of static electron-phonon coupling on real-time dynamics of spin
and charge transport in π-conjugated polyene chains. The polyene chain is modeled by the …

Real-time density matrix renormalization group dynamics of spin and charge transport in push-pull polyenes and related systems

T Dutta, S Ramasesha - Physical Review B—Condensed Matter and Materials …, 2012 - APS
In this paper we investigate the effect of terminal substituents on the dynamics of spin and
charge transport in donor-acceptor substituted polyenes [D–(CH) x–A] chains, also known …

Double Time Window Targeting Technique: Real time DMRG dynamics in the PPP model

T Dutta, S Ramasesha - arXiv preprint arXiv:1003.1372, 2010 - arxiv.org
We present a generalized adaptive time-dependent density matrix renormalization group
(DMRG) scheme, called the {\it double time window targeting}(DTWT) technique, which …