7 papers
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…
Gravitational waves from parabolic encounters: A study of linear and nonlinear memory
Samik Dutta, Ankur Chhabra, Aritra Banerjee +2
The memory effect is known to introduce a permanent displacement in the gravitational wave (GW) detectors after the passage of a GW signal. While the adher…
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…
Testing the Starobinsky model of inflation with resonant cavities
Subhendra Mohanty, Sukanta Panda, Archit Vidyarthi
We show that the Starobinsky inflation model based on gravity has a special feature that it provides a unique scalaron-two-graviton vertex with a coupling proportional to $1/…
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…