Astrophysics & Particle Physics-APPC 2026

Quantum Astrophysics is a cross-disciplinary branch that encompasses quantum mechanics and astrophysics to understand the behavior of matter and energy in extreme cosmic conditions. It examines phenomena in which quantum phenomena and gravitational forces both play a large role, like black holes, neutron stars, and the universe in its early stages.An aspect covered is that of compact object physics, i.e., black holes and neutron stars, where quantum processes control particle behavior at extreme densities, pressures, and magnetic fields. Quantum phenomena also support Hawking radiation, the production of particles at event horizons, and the mechanisms of emission in high-density astrophysical plasmas.Quantum astrophysics also studies dark matter and dark energy, applying quantum field theories to describe them and their interactions with regular matter.

It also explores quantum fluctuations in the early universe, which sowed the seed for galaxies and large-scale cosmic structures seen today.Fast high-energy environments like cosmic rays, magnetars, and supernova interiors are also probed by quantum concepts like wave-particle duality, quantum tunneling, and relativistic quantum field effects. Quantum astrophysics is also related to quantum theories of gravity, including string theory and loop quantum gravity, for probing the unification of quantum mechanics with general relativity.Experimental and computational methods supplement theoretical contributions in quantum astrophysics.

Space telescopes, gamma-ray and X-ray observatories, and neutrino detectors yield information on extreme environments, whereas simulations assist in modeling quantum phenomena in astrophysical systems.Studying quantum effects in the universe allows scientists to test fundamental laws of physics, learn about matter under conditions of extreme environments, and explore the origin and evolution of the universe. Quantum astrophysics bridges the gap between microscopic quantum laws and macroscopic cosmic phenomena, offering insights into the deepest mysteries of the universe.