Zobrazeno 1 - 10
of 675
pro vyhledávání: '"Tiwari, Vivek"'
Early diagnosis of Alzheimer's disease is a challenge because the existing methodologies do not identify the patients in their preclinical stage, which can last up to a decade prior to the onset of clinical symptoms. Several research studies demonstr
Externí odkaz:
http://arxiv.org/abs/2401.00981
We demonstrate an approach to two-dimensional electronic spectroscopy (2DES) that combines the benefits of shot-to-shot detection at high-repetition rates with the simplicity of a broadband white light continuum input and conventional optical element
Externí odkaz:
http://arxiv.org/abs/2310.00293
Autor:
Rai, Suraj Kumar, Tiwari, Vivek Kumar
Augmenting the improved chiral effective potential of the on-shell renormalized 2+1 flavour quark-meson (RQM) model with the Polyakov-loop potential that accounts for the deconfinement transition,~we get the Quantum Chromodynamics (QCD) like framewor
Externí odkaz:
http://arxiv.org/abs/2306.12382
Singlet exciton fission (SEF) is initiated by ultrafast internal conversion of a singlet exciton into a correlated triplet pair (TT)1. The `reaction coordinates' for ultrafast SEF even in archetypal systems such as pentacene thin film remain unclear
Externí odkaz:
http://arxiv.org/abs/2305.16861
Autor:
Rai, Suraj Kumar, Tiwari, Vivek Kumar
The Quantum Chromodynamics (QCD) phase structure has been studied using the Polyakov-loop augmented quark-meson model (PQM) in the extended mean field approximation (e-MFA) where the quark one-loop vacuum term is included.~When the divergent vacuum t
Externí odkaz:
http://arxiv.org/abs/2305.16180
Autor:
Sahu, Amitav, Tiwari, Vivek
Coherence maps (CMs) in multidimensional spectroscopy report total interference of all quantum coherent pathways. Detailed understanding of how this interference manifests spectroscopically is vital for deciphering mechanistic origins of impulsively
Externí odkaz:
http://arxiv.org/abs/2302.00276
We demonstrate a femtosecond pump-probe spectrometer which utilizes a white light supercontinuum as input, and relies on mutual synchronization of acousto-optical chopper, pump-probe delay stage and the CCD camera to record shot-to-shot pump-probe sp
Externí odkaz:
http://arxiv.org/abs/2212.13016
Autor:
Tiwari, Vivek Kumar
The vacuum effective potential and phase diagram for the three (2+1) flavor quark-meson model have been computed and compared in an extended mean-field approximation (e-MFA) where the model parameters are fixed by using different renormalization pres
Externí odkaz:
http://arxiv.org/abs/2211.11686
Background-free fluorescence detection in multidimensional electronic spectroscopy promises high sensitivity compared to conventional approaches. Here we explore the sensitivity limits of multidimensional electronic spectroscopy. We present a fluores
Externí odkaz:
http://arxiv.org/abs/2210.08239
Autor:
Rai, Suraj Kumar, Tiwari, Vivek Kumar
We compute and compare the effective potential and phase structure for the quark-meson model in an extended mean-field approximation (e-MFA) when vacuum one loop quark fluctuations are included and the model parameters are fixed using different renor
Externí odkaz:
http://arxiv.org/abs/2202.11661