Quantum machine naked eye." Quantum machine A quantum machine is a human-made device whose collective motion follows the laws of quantum mechanics. The idea that macroscopic objects may follow the laws of quantum mechanics dates back to the advent of quantum mechanics in the early 20th century. However, as highlighted by the Schrödinger's cat thought experiment, quantum effects are not readily observable in large-scale objects. Consequently, quantum states of motion have only been observed in special circumstances at extremely low temperatures. The fragility of quantum effects in macroscopic objects may arise from rapid quantum decoherence. Researchers created the first quantum machine in
Dead or Alive 5 as several new stages and fighters (including "Ninja Gaiden"s Rachel and Momiji, and "Virtua Fighter"'s Jacky Bryant, as well as the return of "Dead or Alive 2" characters Leon and Hayate's amnesiac karateka identity, Ein), and all-new features such as two-on-two online multiplayer tag team battles, among many other changes. Three new female characters: Marie Rose, Phase-4 and Nyotengu, joined the game's roster in 2014. A free digital version, titled "Dead or Alive 5 Ultimate: Core Fighters", which features four playable characters and the online mode, with additional characters and story mode content available as purchasable downloadable content, was released