basic_notions:mass
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basic_notions:mass [2017/11/10 11:02] jakobadmin [Layman] |
basic_notions:mass [2018/10/11 15:38] (current) jakobadmin [Intuitive] |
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| ====== Mass ====== | ====== Mass ====== | ||
| - | <tabbox Why is it interesting?> | + | <tabbox Intuitive> |
| - | + | ||
| - | <blockquote> | + | |
| - | A lower limit to the amount of energy that a particle can have is a property of a particle with a mass.An object may have any amount of kinetic energy, the amount getting smaller as the body slows toward rest. At this point the particle has its mini-mum energy; the amount of which, E, would then correspond to a mass m given by Einstein’s famous equation $E=mc^2$. For a massless body, the minimum energy in principle can be zero. | + | |
| - | <cite>From "The Infinity Puzzle", by Frank Close</cite> | + | |
| - | </blockquote> | + | |
| - | <tabbox Layman> | + | |
| * [[ftp://srdconsulting.com/USB_BackUp/Data/Articles/QFT/Strassler/MassEnergy/OkunMass.pdf|The Concept of Mass]] by Lev Okun | * [[ftp://srdconsulting.com/USB_BackUp/Data/Articles/QFT/Strassler/MassEnergy/OkunMass.pdf|The Concept of Mass]] by Lev Okun | ||
| * https://gravityandlevity.wordpress.com/2009/05/16/the-equivalence-of-mass-and-energy-the-center-of-energy/ | * https://gravityandlevity.wordpress.com/2009/05/16/the-equivalence-of-mass-and-energy-the-center-of-energy/ | ||
| * http://nautil.us/issue/54/the-unspoken/physics-has-demoted-mass | * http://nautil.us/issue/54/the-unspoken/physics-has-demoted-mass | ||
| + | * [[https://arxiv.org/abs/1206.7114|Origins of Mass]] by Wilzeck | ||
| | | ||
| - | <tabbox Student> | + | <tabbox Concrete> |
| See: [[http://www.hysafe.org/science/KareemChin/PhysicsToday_v42_p31to36.pdf|The Concept of Mass]] by Okun | See: [[http://www.hysafe.org/science/KareemChin/PhysicsToday_v42_p31to36.pdf|The Concept of Mass]] by Okun | ||
| - | <tabbox Researcher> | + | <tabbox Abstract> |
| - | <note tip> | + | * For a nice description see [[https://arxiv.org/abs/0911.1013|Mass in Quantum Yang-Mills Theory]] by L. D. Faddeev |
| - | The motto in this section is: //the higher the level of abstraction, the better//. | + | |
| - | </note> | + | |
| - | --> Common Question 1# | + | ---- |
| - | |||
| - | <-- | ||
| - | --> Common Question 2# | + | <blockquote>In classical physics, mass is a conserved quantity, as |
| + | has been experimentally demonstrated by Lavoisier (around 1790). In SR mass | ||
| + | conservation is no longer valid—as has been shown in the 1930s by more accurate experimental techniques—and is superseded by energy-momentum conservation, as has been most vividly demonstrated in Alamogordo in 1945.<cite>Gauge Theory of Gravity and Spacetime by Friedrich W. Hehl</cite></blockquote> | ||
| - | |||
| - | <-- | ||
| - | | ||
| - | <tabbox Examples> | ||
| - | --> Example1# | + | <tabbox Why is it interesting?> |
| - | + | <blockquote> | |
| - | <-- | + | A lower limit to the amount of energy that a particle can have is a property of a particle with a mass.An object may have any amount of kinetic energy, the amount getting smaller as the body slows toward rest. At this point the particle has its mini-mum energy; the amount of which, E, would then correspond to a mass m given by Einstein’s famous equation $E=mc^2$. For a massless body, the minimum energy in principle can be zero. |
| + | <cite>From "The Infinity Puzzle", by Frank Close</cite> | ||
| + | </blockquote> | ||
| - | --> Example2:# | + | <tabbox FAQ> |
| - | + | ||
| - | + | ||
| - | <-- | + | |
| --> Can we explain masses in QFT?# | --> Can we explain masses in QFT?# | ||
| Line 54: | Line 42: | ||
| which describes bound states. space<cite>https://arxiv.org/pdf/1612.00003.pdf</cite></blockquote> | which describes bound states. space<cite>https://arxiv.org/pdf/1612.00003.pdf</cite></blockquote> | ||
| <-- | <-- | ||
| - | <tabbox History> | ||
| + | -->What's the interpretation of mass in QFT?# | ||
| + | |||
| + | see https://physics.stackexchange.com/questions/56903/the-interpretation-of-mass-in-quantum-field-theories | ||
| + | |||
| + | <-- | ||
| </tabbox> | </tabbox> | ||
basic_notions/mass.1510308158.txt.gz · Last modified: 2017/12/04 08:01 (external edit)
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