A toy model for Macroscopic Quantum Coherence

TL;DR

This paper explores macroscopic quantum coherence using a simple double well model, discussing quantum oscillations, decoherence, and thermal effects to understand the fundamental quantum behavior at large scales.

Contribution

It introduces a basic quantum mechanical model to analyze macroscopic quantum coherence, including effects of thermal radiation and elementary decoherence concepts.

Findings

Demonstrates Leggett-Caldeira oscillations in a double well model

Discusses energy, temperature, and time scales relevant to macroscopic coherence

Provides foundational insights into decoherence at a macroscopic level

Abstract

The present article deals with Macroscopic Quantum Coherence resorting only to basic quantum mechanics. A square double well is used to illustrate the Leggett-Caldeira oscillations. The effect of thermal-radiation on two-level systems is discussed to some extent. The concept of decoherence is introduced at an elementary level. Handles are deduced for the energy, temperature and time scales involved in Macroscopic Quantum Coherence.