# Multi-oscillating Boson Stars

## TL;DR

This paper introduces a new class of stable boson stars characterized by multiple oscillation frequencies, expanding the understanding of their solution space and physical properties.

## Contribution

It numerically constructs and analyzes two-frequency boson star solutions, revealing their relation to standard solutions and their size variations at fixed energy.

## Key findings

- Two-frequency solutions merge with standard boson stars when non-dominant frequencies are zero.
- These solutions can significantly differ in size from standard boson stars at the same energy.
- Stable boson stars can have multiple oscillation modes, broadening their theoretical landscape.

## Abstract

We propose that stable boson stars generically fall within an infinite-parameter family of solutions that oscillate on any number of non-commensurate frequencies. We numerically construct two-frequency solutions and explore their parameter space. These solutions merge with the standard boson star family in the limit where the non-dominating frequencies are turned off. We find that for a fixed energy, these two-frequency solutions can differ considerably in size from standard boson stars.