76 citations · 467 across the 29 of their papers we have counts for
29 papers
TensoriaCalc: A User-Friendly Tensor Calculus Package for the Wolfram Language
Wei-Hao Chen, Yi-Zen Chu, Vaidehi Varma
We describe TensoriaCalc, a tensor calculus package written to be smoothly consistent with the Wolfram Language, so as to ensure ease of usage. It allows multiple metrics to be def…
Initial value formulation of a quantum damped harmonic oscillator
Nishant Agarwal, Yi-Zen Chu
The in-in formalism and its influence functional generalization are widely used to describe the out-of-equilibrium dynamics of unitary and open quantum systems, respectively. In th…
Cherenkov Gravitational Radiation During the Radiation Era
Yi-Zen Chu, Yen-Wei Liu
Cherenkov radiation may occur whenever the source is moving faster than the waves it generates. In a radiation dominated universe, with equation-of-state , we have recentl…
Electromagnetic and Gravitational Radiation in All Dimensions: A Classical Field Theory Treatment
Yi-Zen Chu
How long does a light bulb shine in odd dimensional flat spacetimes, according to a distant observer? This question is non-trivial because electromagnetic and gravitational waves,…
Late time tails and nonlinear memories in asymptotically de Sitter spacetimes
Yi-Zen Chu, M. Afif Ismail, Yen-Wei Liu
We study the propagation of a massless scalar wave in de Sitter spacetime perturbed by an arbitrary central mass. By focusing on the late time limit, this probes the portion of the…
Gravitational Tensor and Acoustic Waves in A Radiation Dominated Universe: Weyl Curvature and Polarization Patterns
Yi-Zen Chu, Yen-Wei Liu
We provide evidence that gravitational radiation in a 4D radiation-dominated universe, with equation-of-state , consists of two components: helicity-2 gravitons and massless…