135 citations · 1.6k across the 67 of their papers we have counts for
8 papers · 1 filter
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…
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…