"A Universe from Nothing". Astronomical Society of the Pacific. 22 Ekim 2013 tarihinde kaynağından arşivlendi. Erişim tarihi: 10 Mart 2010. by Alexei V. Filippenko and Jay M. Pasachoff
Berkeley Lab, Smoot Group - http://aether.lbl.gov 9 Eylül 2014 tarihinde Wayback Machine sitesinde arşivlendi. - Inflation for Beginners, JOHN GRIBBIN 31 Ekim 2014 tarihinde Wayback Machine sitesinde arşivlendi."Quantum uncertainty allows the temporary creation of bubbles of energy, or pairs of particles (such as electron-positron pairs) out of nothing, provided that they disappear in a short time. The less energy is involved, the longer the bubble can exist. Curiously, the energy in a gravitational field is negative, while the energy locked up in matter is positive. If the universe is exactly flat, then as Tryon pointed out the two numbers cancel out, and the overall energy of the universe is precisely zero. In that case, the quantum rules allow it to last forever."
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"A Universe from Nothing". Astronomical Society of the Pacific. 22 Ekim 2013 tarihinde kaynağından arşivlendi. Erişim tarihi: 10 Mart 2010. by Alexei V. Filippenko and Jay M. Pasachoff
Berkeley Lab, Smoot Group - http://aether.lbl.gov 9 Eylül 2014 tarihinde Wayback Machine sitesinde arşivlendi. - Inflation for Beginners, JOHN GRIBBIN 31 Ekim 2014 tarihinde Wayback Machine sitesinde arşivlendi."Quantum uncertainty allows the temporary creation of bubbles of energy, or pairs of particles (such as electron-positron pairs) out of nothing, provided that they disappear in a short time. The less energy is involved, the longer the bubble can exist. Curiously, the energy in a gravitational field is negative, while the energy locked up in matter is positive. If the universe is exactly flat, then as Tryon pointed out the two numbers cancel out, and the overall energy of the universe is precisely zero. In that case, the quantum rules allow it to last forever."
