135 citations · 1.6k across the 67 of their papers we have counts for
69 papers
Hilbert Series of Pseudoscalar Mesons: Operators and Sum Rules
Joydeep Chakrabortty, Sabyasachi Chakraborty, Siddhartha Karmakar
We construct the complete non-redundant basis of operators built from pseudoscalar mesons using the Hilbert series method, subject to the global flavor symmetry $SU(3)_L \times SU(…
Polyakov Loops Tame Phase Transitions
Lisa Biermann, Joydeep Chakrabortty, Christoph Englert
We estimate the impact of Polyakov loop (PL) contributions on electroweak phase transitions (PTs). We show that the PL, which is unavoidable in thermal gauge field theory, tends to…
Higher-dimensional operators and Polyakov loop in hot Scalar QED from the heat kernel
Siddhartha Bandyopadhyay, Joydeep Chakrabortty, Debmalya Dey +2
Using the finite-temperature heat kernel method, we compute the gauge-invariant effective Lagrangian up to dimension-six for massive hot scalar QED. We propose two complementary me…
Finite-temperature operator basis on for SMEFT
Joydeep Chakrabortty, Bruno Siqueira Eduardo, Siddhartha Karmakar +1
We present the first complete non-redundant operator basis for the Standard Model Effective Field Theory (SMEFT) at finite temperature, using the imaginary-time formalism. By emplo…
Background Fields Meet the Heat Kernel: Gauge Invariance and RGEs without diagrams
Debanjan Balui, Joydeep Chakrabortty, Christoph Englert +2
We introduce a new method that exploits the combination of the Heat Kernel (HK) and Background Field Method to compute gauge-invariant and gauge parameter-independent quantities su…
Gauge Choices, Infrared Pitfalls, and Thermal Effects in Effective Potentials
Debanjan Balui, Tisa Biswas, Joydeep Chakrabortty +3
The evaluation of effective potentials is critical for a range of phenomenological applications, including inflation, vacuum stability, and phase transitions. A drawback arises fro…
Gauge Invariant Effective Potential
Debanjan Balui, Joydeep Chakrabortty, Debmalya Dey +1
We show that the long-standing problem of gauge dependence of the effective potential arises due to the factorisation of the determinant of operators, which is invalid when we take…
Electroweak Scalar Effects Beyond Dimension-6 in SMEFT
Nilabhra Adhikary, Tisa Biswas, Joydeep Chakrabortty +2
The Standard Model Effective Field Theory (SMEFT) provides a robust framework for probing deviations in the couplings of Standard Model particles from their theoretical predictions…
One Loop Thermal Effective Action
Joydeep Chakrabortty, Subhendra Mohanty
We compute the one loop effective action for a Quantum Field Theory at finite temperature, in the presence of background gauge fields, employing the Heat-Kernel method. This method…
Renormalization of Scalar and Fermion Interacting Field Theory for Arbitrary Loop: Heat-Kernel Approach
Upalaparna Banerjee, Joydeep Chakrabortty, Kaanapuli Ramkumar
We outline a proposal, based on the Heat-Kernel method, to compute 1PI effective action up to any loop order for quantum field theory with scalar and fermion fields. We algebraical…
One-loop Effective Action up to any Mass-dimension for Non-degenerate Scalars and Fermions including Light-Heavy Mixing
Upalaparna Banerjee, Joydeep Chakrabortty, Shakeel Ur Rahaman +1
We propose a Heat-Kernel-based method to compute one-loop effective action up to any mass-dimension with arbitrary numbers of non-degenerate scalars and fermions. We demonstrate ou…
One-loop Effective Action up to Dimension Eight: Integrating out Heavy Fermion(s)
Joydeep Chakrabortty, Shakeel Ur Rahaman, Kaanapuli Ramkumar
We present the universal one-loop effective action up to dimension eight after integrating out heavy fermion(s) using the Heat-Kernel method. We have discussed how the Dirac operat…
One-loop Effective Action up to Dimension Eight: Integrating out Heavy Scalar(s)
Upalaparna Banerjee, Joydeep Chakrabortty, Shakeel Ur Rahaman +1
We present the complete one-loop effective action up to dimension eight after integrating out degenerate scalars using the Heat-Kernel method. The result is provided without assumi…
EFT, decoupling, Higgs boson mixing, and higher dimensional operators
Upalaparna Banerjee, Joydeep Chakrabortty, Christoph Englert +3
The effective field theory (EFT) framework is a precise approximation procedure when the inherent assumptions of a large-scale separation between the Standard Model (SM) and new in…
LHC EFT WG Note: Precision matching of microscopic physics to the Standard Model Effective Field Theory (SMEFT)
Sally Dawson, Admir Greljo, Kristin Lohwasser +16
This note gives an overview of the tools for the precision matching of ultraviolet theories to the Standard Model effective field theory (SMEFT) at the tree level and one loop. Sev…
Integrating out heavy scalars with modified EOMs: matching computation of dimension-eight SMEFT coefficients
Upalaparna Banerjee, Joydeep Chakrabortty, Christoph Englert +2
The shift in focus towards searches for physics beyond the Standard Model (SM) employing model-independent Effective Field Theory (EFT) methods necessitates a rigorous approach to…
Memories of quenches in operator mixing
Joydeep Chakrabortty, Diptarka Das, Bidyut Dey +2
We work perturbatively with an interacting quantum field theory comprised of two distinct scalar fields. In this theory, we introduce a sudden quench of the mass of one of the scal…
Searches for Baryon Number Violation in Neutrino Experiments: A White Paper
P. S. B. Dev, L. W. Koerner, S. Saad +35
Baryon number conservation is not guaranteed by any fundamental symmetry within the Standard Model, and therefore has been a subject of experimental and theoretical scrutiny for de…
Effective limits on single scalar extensions in the light of recent LHC data
Anisha, Supratim Das Bakshi, Shankha Banerjee +4
In this paper, we work with 16 different single scalar particle extensions of the Standard Model. We present the sets of dimension-6 effective operators and the associated Wilson c…
Effective connections of , Higgs physics, and the collider frontier
Anisha, Upalaparna Banerjee, Joydeep Chakrabortty +3
We consider scalar extensions of the SM and their effective field theoretic generalisations to illustrate the phenomenological connection between precision measurements of the anom…
EFT Diagrammatica: UV Roots of the CP-conserving SMEFT
Supratim Das Bakshi, Joydeep Chakrabortty, Suraj Prakash +2
Effective Field Theories are an established framework to bridge the gap between UV and low energy theories. In the context of the Standard Model, the bottom-up approach extends its…
Extended Higgs sectors, effective field theory and Higgs phenomenology
Anisha, Upalaparna Banerjee, Joydeep Chakrabortty +2
We consider the phenomenological implications of charged scalar extensions of the SM Higgs sector in addition to EFT couplings of this new state to SM matter. We perform a detailed…
Landscaping CP-violating BSM scenarios
Supratim Das Bakshi, Joydeep Chakrabortty, Christoph Englert +2
We consider a wide range of UV scenarios with the aim of informing searches for CP violation at the TeV scale using effective field theory techniques. We demonstrate that broad the…
Classifying Standard Model Extensions Effectively with Precision Observables
Supratim Das Bakshi, Joydeep Chakrabortty, Michael Spannowsky
Effective theories are well established theoretical frameworks to describe the effect of energetically widely separated UV models on observables at lower energy scales. Due to the…