Question

Are there new states of matter at ultrahigh temperatures 

Answer 1

Under extreme energetic conditions, matter undergoes a series of transitions, and atoms break down into their smallest constituent parts. Those parts are elementary particles called quarks and leptons, which as far as we know cannot be subdivided into smaller parts. Quarks are extremely sociable and are never observed in nature alone. Rather, they combine with other quarks to form protons and neutrons (three quarks per proton) that further combine with leptons (such as electrons) to form whole atoms. The hydrogen atom, for example, is made up of an electron orbiting a single proton. Atoms, in turn, bind to other atoms to form molecules, such as H2O. As temperatures increase, molecules transform from a solid such as ice, to a liquid such as water, to a gas such as steam. 

Answer 2

heya..

Here is your answer...

There exists a hell lot of states of matter.

At the core of Neutron stars a hypothesised state of matter called Quark- gluon plama exist.

temperature and density could allow matter undergo nuclear fusion. 

In the most extreme case, the matter could be fused into a superheavy nuclei plasma.

It may help you...☺☺