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Negative masses arise naturally from dynamic groups, as shown in 1970 by the French mathematician Jean-Marie Souriau. We recall this, based on the coadjoint action of the Poincare group on its momentum. Negative populations include negative energy photons. If we admit that positive and negative masses cannot interact through virtual photons, they only interact through gravitational force. Two particles whose masses display the same sign attract each other through Newton law. Two particles of opposite signs repel each-other through "anti-Newton" law. Then the two populations tend to separate. If the mass density of the negative material is much larger, it first forms clusters by gravitational instability. Then the positive matter is repelled in the remnant place, shaped like adjoining bubbles, which looks like VLS. To illustrate this scheme, we provide 2D simulation results. In addition this model provides a new insight on the galaxies' birth mechanism.

journal of physics. conference series

An alternative model, explaining the VLS, created by the gravitational interaction of two matter populations, one composed of positive mass and the other of negative mass