5k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Aryabhatta Research Institute of Observational SciencesIN239 papers
- Tata Institute of Fundamental ResearchIN175 papers
- Centre National de la Recherche ScientifiqueFR133 papers
- Pondicherry UniversityIN120 papers
- Indian Institute of Science BangaloreIN119 papers
- Inter-University Centre for Astronomy and AstrophysicsIN114 papers
- Christ UniversityIN108 papers
- National Centre for Radio AstrophysicsIN98 papers
- Physical Research LaboratoryIN92 papers
- Chinese Academy of SciencesCN77 papers
- Instituto de Astrofísica de CanariasES77 papers
- National Astronomical Observatory of JapanJP77 papers
51 papers · 1 filter
Analysis of Enhancement factors of Parity and Time Reversal Violating Effects for Monofluorides
A. Sunaga, V. S. Prasannaa, M. Abe +2
Heavy polar diatomic molecules are currently one of the leading candidates for probing physics beyond the Standard Model via studies of time-reversal (T) and parity (P) violations.…
Application of the Finite Field Coupled Cluster Method to Calculate Molecular Properties Relevant to Electron Electric Dipole Moment Searches
M Abe, V S Prasannaa, B P Das
Heavy polar diatomic molecules are currently among the most promising probes of fundamental physics. Constraining the electric dipole moment of the electron (eEDM), in order to exp…
Theoretical analysis of effective electric fields in mercury monohalides
V. S. Prasannaa, M. Abe, V. M. Bannur +1
Mercury monohalides are promising candidates for electron electric dipole moment searches. This is due to their extremely large values of effective electric fields, besides other a…
Permanent Electric Dipole Moments of Alkaline Earth Monofluorides: Interplay of Relativistic and Correlation Effects
V. S. Prasannaa, Sreerekha S, M. Abe +2
The interplay of the relativistic and correlation effects in the permanent electric dipole moments (PDMs) of the X2Σ+ (ν = 0) electronic ground states of the alkaline earth monoflo…
Correlation Trends in the Hyperfine Structures of Fr
B. K. Sahoo, D. K. Nandy, B. P. Das +1
We demonstrate the importance of electron correlation effects in the hyperfine structure constants of many low-lying states in Fr and Fr. This is achieved by calcul…
A Relativistic Many-Body Analysis of the Electric Dipole Moment of Rn
B. K. Sahoo, Yashpal Singh, B. P. Das
We report the results of our {\it ab initio} relativistic many-body calculations of the electric dipole moment (EDM) arising from the electron-nucleus tensor-pseudotensor (T-…
Mercury Monohalides: Suitability for Electron Electric Dipole Moment Searches
V. S. Prasannaa, A. C. Vutha, M. Abe +1
Heavy polar diatomic molecules are the primary tools for searching for the T-violating permanent electric dipole moment of the electron (eEDM). Valence electrons in some molecules…
Permanent Electric Dipole Moment of Strontium Monofluoride as a Test of the Accuracy of a Relativistic Coupled Cluster Method
V S Prasannaa, M Abe, B P Das
The permanent electric dipole moment of the X 2 Σ+ electronic ground state of the strontium monofluoride molecule is calculated using a relativistic coupled cluster method. Our res…
A Relativistic Equation-of-motion Coupled-Cluster Investigation of the Trends of Single and Double Ionization Potentials in the He and Be Isoelectronic Systems
Himadri Pathak, B. K. Sahoo, Turbasu Sengupta +3
We employ four-component spinor relativistic equation-of-motion coupled-cluster (EOMCC) method within the single- and double- excitation approximation to calculate the single ioniz…
Application of a Relativistic Coupled-Cluster Theory to the Effective Electric Field in YbF
M. Abe, G. Gopakumar, M. Hada +3
An accurate determination of the effective electric field (Eeff) in YbF is important, as it can be combined with the results of future experiments to give an improved new limit for…
Relativistic equation-of-motion coupled-cluster method for the double ionization potentials of the closed-shell atoms
Himadri Pathak, Aryya Ghosh, B. K. Sahoo +3
We report the general implementation of the relativistic equation-of-motion coupled-cluster method to calculate double ionization spectra (DI-EOMCC) of atomic and molecular systems…
Relativistic Equation of Motion Coupled-Cluster Method: Application to the closed-shell atomic systems
Himadri Pathak, B. K. Sahoo, B. P. Das +2
We report our successful implementation of the full fledged relativistic equation of motion coupled cluster (EOMCC) method. This method is employed to compute the principal ionizat…
Correlation trends in the ground state static electric dipole polarizabilities of closed-shell atoms and ions
Yashpal Singh, B. K. Sahoo, B. P. Das
We employ the closed-shell perturbed relativistic coupled-cluster (RCC) theory developed by us earlier [Phys. Rev. A {\bf 77}, 062516 (2008)] to evaluate the ground state static el…
Reliability test for the experimental results of electric quadrupole hyperfine structure constants and new assessment of nuclear quadrupole moments in Ba
B. K. Sahoo, M. D. Barrett, B. P. Das
We investigate electric quadrupole hyperfine structure constant () results in Ba and Ba and compare their ratios with the reported measurements of the ra…
Search For A Permanent Electric Dipole Moment Using Atomic Indium
B. K. Sahoo, R. Pandey, B. P. Das
We propose indium (In) as a possible candidate for observing the permanent electric dipole moment (EDM) arising from the violations of parity (P) and time-reversal (T) symmetries.…
Reply to Comment on "Reappraisal of the Electric Dipole Moment Enhancement Factor for Thallium"
H. S. Nataraj, B. K. Sahoo, B. P. Das +1
In a recent Comment [arXiv:1108.3399], Dzuba and Flambaum have referred to the disagreement of the results of our latest calculations of Tl electron and scalar-pseudoscalar (S-PS)…
Parity nonconservation in ytterbium ion
B. K. Sahoo, B. P. Das
We consider parity nonconservation (PNC) in singly ionized ytterbium (Yb+) arising from the neutral current weak interaction. We calculate the PNC electric dipole transition amplit…
Transition Properties of Low Lying States in Atomic Indium
B. K. Sahoo, B. P. Das
We present here the results of our relativistic many-body calculations of various properties of the first six low-lying excited states of indium. The calculations were performed us…
Relativistic general-order coupled-cluster method for high-precision calculations: Application to Al+ atomic clock
Mihaly Kallay, B. K. Sahoo, H. S. Nataraj +2
We report the implementation of a general-order relativistic coupled-cluster method for performing high-precision calculations of atomic and molecular properties. As a first applic…
A Reappraisal of the Electric Dipole Moment Enhancement Factor for Thallium
H. S. Nataraj, B. K. Sahoo, B. P. Das +1
The electric dipole moment (EDM) enhancement factor of atomic Tl is of considerable interest as it has been used in determining the most accurate intrinsic electron EDM limit to da…
Comparative studies of dipole polarizabilities in Sr, Ba and Ra and their applications to optical clocks
B. K. Sahoo, R. G. E. Timmermans, B. P. Das +1
Static dipole polarizabilities are calculated in the ground and metastable states of Sr, Ba and Ra using the relativistic coupled-cluster method. Trends of the electron…
Probing CP violation with the electric dipole moment of atomic mercury
K. V. P. Latha, D. Angom, B. P. Das +1
The electric dipole moment of atomic Hg induced by the nuclear Schiff moment and tensor-pseudotensor electron-nucleus interactions has been calculated. For this, we have de…
Relativistic coupled-cluster studies of ionization potentials, lifetimes and polarizabilities in singly ionized calcium
B. K. Sahoo, B. P. Das, D. Mukherjee
Using the relativistic coupled-cluster method, we have calculated ionization potentials, E1 matrix elements and dipole polarizabilities of many low-lying states of Ca. Contribu…
Ab initio determination of polarizabilities and van der Waals coefficients of Li atoms using the relativistic CCSD(T) method
L. W. Wansbeek, B. K. Sahoo, R. G. E. Timmermans +2
We report a new technique to determine the van der Waals coeffcients of lithium (Li) atoms based on the relativistic coupled-cluster theory. These quantities are determined using t…