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In physics, exotic matter is matter that somehow deviates from normal matter and has "exotic" properties. A more broad definition of exotic matter is any kind of non-baryonic matter—that is not made of baryons, the subatomic particles, such as protons and neutrons, of which the ordinary matter is composed.〔(【引用サイトリンク】title=Exotic matter )〕 Exotic mass has been considered a colloquial term for matters such as dark matter, negative mass, or imaginary mass. ==Types of exotic matter== There are several types of exotic matter: * Hypothetical particles that have "exotic" physical properties that would violate known laws of physics, such as a particle having a negative mass. * Hypothetical particles that have not yet been encountered, such as exotic baryons, but whose properties would be within the realm of mainstream physics if found to exist. * States of matter that are not commonly encountered, such as Bose–Einstein condensates and quark–gluon plasma, but whose properties are perfectly within the realm of mainstream physics. * States of matter that are poorly understood, such as dark matter. * Ordinary matter placed under high pressure. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Exotic matter」の詳細全文を読む スポンサード リンク
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