A study conducted by the National Centre for Basic Sciences (SNBNCBS) showed that the geometry of space-time can cause neutrinos to oscillate. The study was supported under the Department of Science & Technology (DST)

What are Neutrinos?

They are mysterious particles, produced copiously in nuclear reactions in the Sun, stars, and elsewhere.

Neutrinos interact very weakly.

They oscillate and different types of neutrinos change into one another.

The phenomenon of neutrino oscillations requires neutrinos to have tiny masses.

Probing oscillations of neutrinos and their relations with mass are crucial in studying the origin of the universe.

Findings of the study

The geometry of space-time can cause neutrino oscillations through quantum effects even if neutrinos are massless.

Einstein’s theory of general relativity says that gravitation is the manifestation of space-time curvature.

The neutrinos, electrons, protons, and other particles which are in the category of fermions show a certain peculiarity when they move in presence of gravity.

Space-time induces a quantum force in addition to gravity between every two fermions.

This force can depend on the spin of the particles and causes massless neutrinos to appear massive when they pass through matter, like the Sun’s corona or the Earth’s atmosphere.

Something similar happens for electroweak interactions, and together with the geometrically induced mass, it is enough to cause oscillation of neutrinos.

Space-time is a mathematical model which fuses the three dimensions of space and the one dimension of time into a single four-dimensional manifold.

Spacetime diagrams can be used to visualize relativistic effects, such as why different observers perceive differently where and when events occur.

## Neutrino Oscillations induced by Space-time

## Context:

A study conducted by the National Centre for Basic Sciences (SNBNCBS) showed that the geometry of space-time can cause neutrinos to oscillate. The study was supported under the Department of Science & Technology (DST)

## What are Neutrinos?

## Findings of the study

Space-timeis a mathematical model which fuses the three dimensions of space and the one dimension of time into a single four-dimensional manifold.Spacetimediagrams can be used to visualize relativistic effects, such as why different observers perceive differently where and when events occur.