the shape of physics elementary particles and their masses ...phys16/lectures/sl25.pdffluid dynamics...
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![Page 1: The shape of physics Elementary particles and their masses ...phys16/lectures/sl25.pdfFluid Dynamics 1,596 3.69% Polymer 1,278 2.95% Laser Science 1,321 3.05% Materials 2,228 5.15%](https://reader035.vdocuments.us/reader035/viewer/2022062318/61328e71dfd10f4dd73a86f4/html5/thumbnails/1.jpg)
The shape of physics
Elementary particles and their masses
Symmetry and GUTs
States of the vacuum
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Atomic/Molec/Optical 2,525 5.84%Astrophysics 1,759 4.07%
Biological 1,668 3.86%Computational 2,004 4.63%
Condensed Matter 5,410 12.51%Chemical 1,815 4.2%
Fluid Dynamics 1,596 3.69%Polymer 1,278 2.95%
Laser Science 1,321 3.05%Materials 2,228 5.15%
Nuclear 2,420 5.59%Beams 1,165 2.69%
Particles/Fields 3,299 7.63%Plasma 2,520 5.83%
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Atomic/Molec/Optical PhysAstrophysics
BiologicalComputational
Condensed Matter PhysChemical
Fluid DynamicsPolymer
Laser ScienceMaterials
NuclearBeams
Particles/Fields PhysPlasma
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Atomic/Molec/Optical PhysAstrophysics Astro, phys
Biological Bio, Chem, Phys, DEASComputational astro, phys
Condensed Matter PhysChemical Chem, Phys
Fluid Dynamics DEASPolymer phys
Laser Science physMaterials DEAS
Nuclear astroBeams phys
Particles/Fields PhysPlasma Astro
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![Page 6: The shape of physics Elementary particles and their masses ...phys16/lectures/sl25.pdfFluid Dynamics 1,596 3.69% Polymer 1,278 2.95% Laser Science 1,321 3.05% Materials 2,228 5.15%](https://reader035.vdocuments.us/reader035/viewer/2022062318/61328e71dfd10f4dd73a86f4/html5/thumbnails/6.jpg)
Atomic/Molec/Optical 10−10 m 1− 109?Astrophysics > 105 m ≈ ∞
Biological 10−7 − 10 m ≈ ∞Computational all scales tools
Condensed Matter 10−8 − 10−1 m ≈ ∞Chemical 10−10 − 10−7 m ¿∞
Fluid Dynamics À 10−10 m ≈ ∞Polymer À 10−10 m À 1
Laser Science all scales toolsMaterials À 10−10 m ≈ ∞
Nuclear 10−15 − 10−14 m 1− 300Beams all scales tools
Particles/Fields < 10−15 m ≈ 1Plasma À 10−10 m ≈ ∞
![Page 7: The shape of physics Elementary particles and their masses ...phys16/lectures/sl25.pdfFluid Dynamics 1,596 3.69% Polymer 1,278 2.95% Laser Science 1,321 3.05% Materials 2,228 5.15%](https://reader035.vdocuments.us/reader035/viewer/2022062318/61328e71dfd10f4dd73a86f4/html5/thumbnails/7.jpg)
Atomic/Molec/Optical 10−10 m 1− 109?Astrophysics > 105 m ≈ ∞
Biological 10−7 − 10 m ≈ ∞Computational all scales tools
Condensed Matter 10−8 − 10−1 m ≈ ∞Chemical 10−10 − 10−7 m ¿∞
Fluid Dynamics À 10−10 m ≈ ∞Polymer À 10−10 m À 1
Laser Science all scales toolsMaterials À 10−10 m ≈ ∞
Nuclear 10−15 − 10−14 m 1− 300Beams all scales tools
Particles/Fields < 10−15 m ≈ 1Plasma À 10−10 m ≈ ∞
![Page 8: The shape of physics Elementary particles and their masses ...phys16/lectures/sl25.pdfFluid Dynamics 1,596 3.69% Polymer 1,278 2.95% Laser Science 1,321 3.05% Materials 2,228 5.15%](https://reader035.vdocuments.us/reader035/viewer/2022062318/61328e71dfd10f4dd73a86f4/html5/thumbnails/8.jpg)
Atomic/Molec/Optical 10−10 m 1− 109?Astrophysics > 105 m ≈ ∞
Biological 10−7 − 10 m ≈ ∞Computational all scales tools
Condensed Matter 10−8 − 10−1 m ≈ ∞Chemical 10−10 − 10−7 m ¿∞
Fluid Dynamics À 10−10 m ≈ ∞Polymer À 10−10 m À 1
Laser Science all scales toolsMaterials À 10−10 m ≈ ∞
Nuclear 10−15 − 10−14 m 1−∞Beams all scales tools
Particles/Fields < 10−15 m ≈ 1Plasma À 10−10 m ≈ ∞
![Page 9: The shape of physics Elementary particles and their masses ...phys16/lectures/sl25.pdfFluid Dynamics 1,596 3.69% Polymer 1,278 2.95% Laser Science 1,321 3.05% Materials 2,228 5.15%](https://reader035.vdocuments.us/reader035/viewer/2022062318/61328e71dfd10f4dd73a86f4/html5/thumbnails/9.jpg)
Atomic/Molec/Optical 10−10 m 1− 109?Astrophysics > 105 m ≈ ∞
Biological 10−7 − 10 m ≈ ∞Computational all scales tools
Condensed Matter 10−8 − 10−1 m ≈ ∞Chemical 10−10 − 10−7 m ¿∞
Fluid Dynamics À 10−10 m ≈ ∞Polymer À 10−10 m À 1
Laser Science all scales toolsMaterials À 10−10 m ≈ ∞
Nuclear 10−15 − 10−14 m 1−∞Beams all scales tools
Particles/Fields < 10−15 m ≈ 1Plasma À 10−10 m ≈ ∞
![Page 10: The shape of physics Elementary particles and their masses ...phys16/lectures/sl25.pdfFluid Dynamics 1,596 3.69% Polymer 1,278 2.95% Laser Science 1,321 3.05% Materials 2,228 5.15%](https://reader035.vdocuments.us/reader035/viewer/2022062318/61328e71dfd10f4dd73a86f4/html5/thumbnails/10.jpg)
Atomic/Molec/Optical 10−10 m 1− 109?Astrophysics > 105 m ≈ ∞
Biological 10−7 − 10 m ≈ ∞Computational all scales tools
Condensed Matter 10−8 − 10−1 m ≈ ∞Chemical 10−10 − 10−7 m ¿∞
Fluid Dynamics À 10−10 m ≈ ∞Polymer À 10−10 m À 1
Laser Science all scales toolsMaterials À 10−10 m ≈ ∞
Nuclear 10−15 − 10−14 m 1−∞Beams all scales tools
Particles/Fields < 10−15 m ≈ 1Plasma À 10−10 m ≈ ∞
![Page 11: The shape of physics Elementary particles and their masses ...phys16/lectures/sl25.pdfFluid Dynamics 1,596 3.69% Polymer 1,278 2.95% Laser Science 1,321 3.05% Materials 2,228 5.15%](https://reader035.vdocuments.us/reader035/viewer/2022062318/61328e71dfd10f4dd73a86f4/html5/thumbnails/11.jpg)
Atomic/Molec/Optical 10−10 m 1− 109?Astrophysics > 105 m ≈ ∞
Biological 10−7 − 10 m ≈ ∞Computational all scales tools
Condensed Matter 10−8 − 10−1 m ≈ ∞Chemical 10−10 − 10−7 m ¿∞
Fluid Dynamics À 10−10 m ≈ ∞Polymer À 10−10 m À 1
Laser Science all scales toolsMaterials À 10−10 m ≈ ∞
Nuclear 10−15 − 10−14 m 1−∞Beams all scales tools
Particles/Fields < 10−15 m ≈ 1Plasma À 10−10 m ≈ ∞
![Page 12: The shape of physics Elementary particles and their masses ...phys16/lectures/sl25.pdfFluid Dynamics 1,596 3.69% Polymer 1,278 2.95% Laser Science 1,321 3.05% Materials 2,228 5.15%](https://reader035.vdocuments.us/reader035/viewer/2022062318/61328e71dfd10f4dd73a86f4/html5/thumbnails/12.jpg)
Atomic/Molec/Optical 10−10 m 1− 109?Astrophysics > 105 m ≈ ∞
Biological 10−7 − 10 m ≈ ∞Computational all scales tools
Condensed Matter 10−8 − 10−1 m ≈ ∞Chemical 10−10 − 10−7 m ¿∞
Fluid Dynamics À 10−10 m ≈ ∞Polymer À 10−10 m À 1
Laser Science all scales toolsMaterials À 10−10 m ≈ ∞
Nuclear 10−15 − 10−14 m 1−∞Beams all scales tools
Particles/Fields < 10−15 m ≈ 1Plasma À 10−10 m ≈ ∞
![Page 13: The shape of physics Elementary particles and their masses ...phys16/lectures/sl25.pdfFluid Dynamics 1,596 3.69% Polymer 1,278 2.95% Laser Science 1,321 3.05% Materials 2,228 5.15%](https://reader035.vdocuments.us/reader035/viewer/2022062318/61328e71dfd10f4dd73a86f4/html5/thumbnails/13.jpg)
Atomic/Molec/Optical 10−10 m 1− 109?Astrophysics > 105 m ≈ ∞
Biological 10−7 − 10 m ≈ ∞Computational all scales tools
Condensed Matter 10−8 − 10−1 m ≈ ∞Chemical 10−10 − 10−7 m ¿∞
Fluid Dynamics À 10−10 m ≈ ∞Polymer À 10−10 m À 1
Laser Science all scales toolsMaterials À 10−10 m ≈ ∞
Nuclear 10−15 − 10−14 m 1−∞Beams all scales tools
Particles/Fields < 10−15 m ≈ 1Plasma À 10−10 m ≈ ∞
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TOPICAL GROUPSFew Body Systems 324 0.75%
Fundamental Constants 378 0.87%Gravitation 654 1.51%
Hadronic 268 0.62%Measurement 545 1.26%
Magnetism 680 1.57%Plasma Astrophysics 258 0.6%Shock Compression 379 0.88%
Statistical/Non-Linear 789 1.82%
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All science is either physics
or stamp collecting.
—Ernest Rutherford.
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All science is either physics
or stamp collecting.
—Ernest Rutherford.••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••
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Physics is not a collection of
facts, but rather a practical
toolkit for the manipulationof the physical world.
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Elementary particles and their masses
e− µ− τ−
d s b
u c t
W±Z
νs?......................................................................................... ................................................................................. ........
10−15 10−10 10−5 1
10−1510−1010−51
}leptons
{
quarks
{
charged
neutrinos
force particles (photon, gluon and graviton are massless)
Mass (GeV) −→
←− λ (cm)
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very low energy - below eV - ordinary matter - no obvious internal structure
e− µ− τ−
d s b
u c t
W±Z
νs?......................................................................................... ................................................................................. ........
10−15 10−10 10−5 1
10−1510−1010−51
}leptons
{
quarks
{
charged
neutrinos
force particles (photon, gluon and graviton are massless)
Mass (GeV) −→←−
←− λ (cm)
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a few eV — atomic structure visible
e− µ− τ−
d s b
u c t
W±Z
νs?......................................................................................... ................................................................................. ........
10−15 10−10 10−5 1
10−1510−1010−51
}leptons
{
quarks
{
charged
neutrinos
force particles (photon, gluon and graviton are massless)
↔Mass (GeV) −→
←− λ (cm)
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few hundred MeV - structure of proton and new families
e− µ− τ−
d s b
u c t
W±Z
νs?......................................................................................... ................................................................................. ........
10−15 10−10 10−5 1
10−1510−1010−51
}leptons
{
quarks
{
charged
neutrinos
force particles (photon, gluon and graviton are massless)
↔Mass (GeV) −→
←− λ (cm)
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10s of GeV - more new families - details of QCD - neutrinos
e− µ− τ−
d s b
u c t
W±Z
νs?......................................................................................... ................................................................................. ........
10−15 10−10 10−5 1
10−1510−1010−51
}leptons
{
quarks
{
charged
neutrinos
force particles (photon, gluon and graviton are massless)
↔Mass (GeV) −→
←− λ (cm)
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100s of GeV - standard model
e− µ− τ−
d s b
u c t
W±Z
νs?......................................................................................... ................................................................................. ........
10−15 10−10 10−5 1
10−1510−1010−51
}leptons
{
quarks
{
charged
neutrinos
force particles (photon, gluon and graviton are massless)
↔Mass (GeV) −→
←− λ (cm)
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Symmetry and GUTsa introduction of the standard model and its possibleextensions - one kind of electric charge - but threecolors of quarks with two kinds of “color charge”
at “low”
energies
below
100 GeV
charge particle
electric photon
color×2 gluons×8
2 gluons for charges - 2D space of color triangle
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6 gluons for transitions between colors - SU(3)
••
•
.................................... ....................................................
......................................................................................
......................................................................................
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an indication that there is some connection betweencolor and electric charge -
e+
d−1/3R
d−1/3G
d−1/3B
...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
...............................................................................................................................................................................................
..............................................................
..............................................................
..............................................................
..............................................................
..
..................................................................................................................................
electric and color charges add to zero — but otherparticles don’t fit
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at “high”
energies
À 100 GeV
charge particle
electric photon′
electroweak W+, W−, Z ′
color×2 gluons×8
•• .................................... ....................................................
W+
W−
W± for transitions between flavors - SU(2)
(νe, e−), (u, d), · · · - symmetry in doublets at short
distances when masses are unimportant - weak forceat longer distances
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W± and Z were understood long before they wereseen experimentally by studying “weak interactions”they produce such as neutron decay
n[udd] → p[uud] + e−
or neutrino production in the sun
p + p → D + e+ + ν
and neutral current neutrino scattering
ν + p → ν + p
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at very
high
energies
???????
charge particle
electric photon′
electroweak W+, W−, Z ′
color×2 gluons×8
Xs× 12
Xs for transitions between antiquarks and leptons orbetween quarks and antiquarks - SU(5)
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e+
νd−1/3R
d−1/3G
d−1/3B
.........................................................
...........................................................
...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
...............................................................................................................................................................................................
..............................................................
..............................................................
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..
..................................................................................................................................
Antineutrino at the center, but displaced in the 4thdimension.
4-simplex - 4-d analog of a tetrahedron - SU(5)
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at very
high
energies
???????
charge particle
electric photon′
electroweak W+, W−, Z ′
color×2 gluons×8
Xs× 12
Xs for transitions between antiquarks and leptons orbetween quarks and antiquarks - SU(5)
couplings may unify at ≈ 1015 GeV
if this is right, Xs should produce proton decay
i.e. p → e+π0 not seen yet
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States of the vacuumcompletely confused about where the specific valuesof these particle masses come from
existence of all masses depends on the peculiar stateof the vacuum
vacuum is nothing - how can nothing affect us?
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“we live in the vacuum as a fish swims in the sea”
“nothing” refers only to what we can control — ifyou are a fish, you are stuck with the properties ofthe sea - temperature, viscosity, oxygen content, etc.
fish scientists can study the symmetries of their oceanexperiment locally with different phases of water
beware of Ice IX
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“we live in the vacuum as a fish swims in the sea”
forces are more symmetrical at short distances
vacuum state screens charges and gives mass to forceparticles
but at short distances below the atomic scale, thephoton is still massless
analog - inside a superconductor - electromagneticforce is screened - “photon” has a mass
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different phases can have very different physicalproperties