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Prospect for extreme field science

極強場科学の展望

田島 俊樹

Tajima, Toshiki

ELI(極端光施設)は、今までわれわれが夢想していたのみと思っていた極強度の電磁場を提供できる。これがもたらす新しい科学の前線について解説する。レーザー加速による超高エネルギーへの踏み込みもその一つである。また、「真空」を物理する新しいスコープも開けるであろう。こうした広範な科学の前線が拓かれることの意義について詳述する。

The kind of laser Extreme Light Infrastructure (ELI) provides will usher in a class of experiments we have only dreamed of for years. The characteristics that ELI brings in include: the highest intensity ever, large fluence, and relatively high repetition rate. A personal view of the author on the prospect of harnessing this unprecedented opportunity for advancing science of extreme fields is presented. The first characteristic of ELI, its intensity, will allow us to access, as many have stressed already, extreme fields that hover around the Schwinger field or at the very least the neighboring fields in which vacuum begins to behave as a nonlinear medium. In this sense, we are seriously probing the "material" property of vacuum and thus the property that theory of relativity itself described and will entail. We will probe both special theory and general theory of relativity in regimes that have been never tested so far. We may see a glimpse into the reach of relativity or even its breakdown in some extreme regimes. We will learn Einstein and may even go beyond Einstein, if our journey is led. Laser-driven acceleration both by the laser field itself and by the wakefield that is triggered in a plasma is huge. Energies, if not luminosity, we can access, may be unprecedented going far beyond TeV.

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パーセンタイル:38.79

分野:Optics

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