# MOND is unnecessary

## TL;DR

This paper demonstrates that within the standard LambdaCDM model, the holographic principle can explain phenomena typically attributed to MOND, rendering the modified gravity hypothesis unnecessary.

## Contribution

The paper shows that the HLSS model, using the holographic principle, accounts for MOND-related phenomena within the LambdaCDM paradigm, challenging the need for modified gravity theories.

## Key findings

- HLSS model explains MOND acceleration
- Baryonic Tully-Fisher relation is accounted for
- Mass discrepancy-acceleration relation is explained

## Abstract

Dark matter seems to account for flat velocity curves in spiral galaxies, with further evidence for dark matter from observations of the colliding "bullet cluster" galaxies 1E0657-56. However, the baryonic Tully-Fisher relation and the mass discrepancy-acceleration relation have been cited (arXiv:1112.3960) as "challenges for the LambdaCDM model." MOND (MOdified Newtonian Dynamics), a modified law of gravity,is invoked in arXiv:1112.3960 to account for those relations. This note shows that the HLSS model in arXiv:1301.0304, employing the holographic principle within the standard LambdaCDM paradigm, readily accounts for the MOND acceleration, the baryonic Tully-Fisher relation, and the mass discrepancy-acceleration relation. After first posting this note, I learned that Man Ho Chan (arXiv:1310.6801) previously reached the same conclusion using a dark matter based analysis independent of the holographic approach used in this paper. These results indicate that the MOND hypothesis is unnecessary.