According to the passage, the author considers the reduction of energy in an empty region of space to which a real particle has been added to be

单项选择题Physicists' recent investigations of the decay of the vacuum, as described in the passage, most closely resemble which of the following hypothetical events in other disciplines

单项选择题Which of the following titles best describes the passage as a whole

单项选择题It can be inferred from the passage that scientists are currently making efforts to observe which of the following events

单项选择题From the sentence Like Proust, the French author whose experiences became his literary capital, man can recapture the past. you can tell that Proust

单项选择题The word contingencies underlined here means