8 papers
(De)Coherence of a quantum system in an anti-de Sitter spacetime
Mandas Biswas, Anupam Mazumdar
In this paper, we study the coherence/decoherence of a quantum harmonic oscillator in anti-de Sitter (AdS) spacetime by quantising the graviton in a curved background with a nontri…
Spatial Qubit Entanglement Witness for Quantum Natured Gravity
Bin Yi, Urbasi Sinha, Dipankar Home +2
Evidencing the quantum nature of gravity through the entanglement of two masses has recently been proposed. Proposals using qubits to witness this entanglement can afford to bring…
Spin-Dependent Force and Inverted Harmonic Potential for Rapid Creation of Macroscopic Quantum Superpositions
Run Zhou, Qian Xiang, Anupam Mazumdar
Creating macroscopic spatial superposition states is crucial for investigating matter-wave interferometry and advancing quantum sensor technology. Currently, two potential methods…
Inertial Torsion Noise in Matter-Wave Interferometers for Gravity Experiments
Meng-Zhi Wu, Marko Toroš, Sougato Bose +1
Matter-wave interferometry is susceptible to non-inertial noise sources, which can induce dephasing and a resulting loss of interferometric visibility. Here, we focus on inertial t…
The Weinberg no-go theorem for cosmological constant and nonlocal gravity
Salvatore Capozziello, Anupam Mazumdar, Giuseppe Meluccio
We show how a nonlocal gravitational interaction can circumvent the Weinberg no-go theorem on cosmological constant, which forbids the existence of any solution to the cosmological…
Smearing out contact terms in ghost-free infinite derivative quantum gravity
Ulrich K. Beckering Vinckers, Ãlvaro de la Cruz-Dombriz, Anupam Mazumdar
In the context of ghost-free infinite derivative gravity, we consider the single graviton exchange between two spinless particles, a spinless particle and a photon, or between a sp…