4 papers
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…
Two-loop dimension Six Effective Action: Integrating Out Heavy Scalar
Nilabhra Adhikary, Jaydeb Das, Debmalya Dey
For the first time, we present the model-independent two-loop effective action up to dimension six after integrating out heavy scalar(s) employing the Heat-Kernel method. We comput…
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…