In the Standard Model of particle physicsthe Higgs mechanism is essential to explain the generation mechanism of the property " mass " for gauge bosons. The Higgs field resolves this conundrum. The simplest description of the mechanism adds a quantum field the Higgs field that permeates all space to the Standard Model. Below some extremely high temperature, the field causes spontaneous symmetry breaking during interactions.
The breaking of symmetry triggers the Higgs mechanism, causing the bosons it interacts with to have mass. The mechanism was proposed in by Philip Warren Anderson following work in the late s on symmetry breaking in superconductivity and a paper by Yoichiro Nambu that discussed its application within particle physics.
Hagenand Tom Kibble. The Higgs mechanism was incorporated into modern particle physics by Steven Weinberg and Abdus Salamand is an essential part of the Standard Model. In the Standard Model, at temperatures high enough that electroweak symmetry is unbroken, all elementary particles are massless.
At a critical temperature, the Higgs field develops a vacuum expectation value ; the symmetry is spontaneously broken by tachyon condensationand the W and Z bosons acquire masses also called "electroweak symmetry breaking", or EWSB. In the history of the universe, this is believed to have happened shortly after the hot big bang, when the universe was at a temperature Fermions, such as the leptons and quarks in the Standard Model, can also acquire mass as a result of their interaction with the Higgs field, but not in the same way as the gauge bosons.
In the standard model, the Higgs field is an SU 2 doublet i. Under U 1 rotations, it is multiplied by a phase, which thus mixes the real and imaginary parts of the complex spinor into each other, combining to the standard two-component complex representation of the group U 2. The Higgs field, through the interactions specified summarized, represented, or even simulated by its potential, induces spontaneous breaking of three out of the four generators "directions" of the gauge group U 2.
Three out of its four components would ordinarily resolve as Goldstone bosonsif they were not coupled to gauge fields. The components that do not mix with Goldstone bosons form a massless photon. The group SU 2 is the group of all 2-by-2 unitary matrices with unit determinant; all the orthonormal changes of coordinates in a complex two dimensional vector space. While the T x and T y generators mix up the top and bottom components of the spinorthe T z rotations only multiply each by opposite phases.
This combination of generators a 3 rotation in the SU 2 and a simultaneous U 1 rotation by half the angle preserves the vacuum, and defines the unbroken gauge group in the standard model, namely the electric charge group. The part of the gauge field in this direction stays massless, and amounts to the physical photon.
In spite of the introduction of spontaneous symmetry breaking, the mass terms preclude chiral gauge invariance.See what's new with book lending at the Internet Archive. Uploaded by artmisa on May 5, Search icon An illustration of a magnifying glass. User icon An illustration of a person's head and chest. Sign up Log in. Web icon An illustration of a computer application window Wayback Machine Texts icon An illustration of an open book.
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Audio Software icon An illustration of a 3. Software Images icon An illustration of two photographs. Images Donate icon An illustration of a heart shape Donate Ellipses icon An illustration of text ellipses. EMBED for wordpress. Want more? Advanced embedding details, examples, and help! Reviewer: Fanindra Sunuwar - favorite favorite favorite favorite favorite - September 10, Subject: other upload Please upload volume 4 and volume 5. Reviewer: artmisa - favorite favorite favorite favorite favorite - March 11, Subject: Re 10th Volume missing This edition of the set had only nine volumes, of which Volume 4 part 2 and Volume 9 Physical Kinematics were still to be published when I bought my set c The volumes were renumbered, I think, after Pergamon was bought out by Elsevier,with the addition of 'Statistical Physics Part 2' as the new Volume 9.
Reviewer: desperadomar - favorite favorite favorite favorite - March 10, Subject: Vol Well here we got the 10 Vol collection in a course in theoretical physics.
But I can't find the 10 th volume physical kinetics. Folkscanomy: A Library of Books. Additional Collections.A theory is a contemplative and rational type of abstract or generalizing thinking about a phenomenonor the results of such thinking.
The process of contemplative and rational thinking often is associated with such processes like observational studyresearch. Theories may either be scientific or other than scientific or scientific to less extent. Depending on the context, the results might, for example, include generalized explanations of how nature works.
The word has its roots in ancient Greekbut in modern use it has taken on several related meanings. In modern sciencethe term "theory" refers to scientific theoriesa well-confirmed type of explanation of naturemade in a way consistent with scientific methodand fulfilling the criteria required by modern science. Such theories are described in such a way that scientific tests should be able to provide empirical support for it, or empirical contradiction " falsify " of it.
Scientific theories are the most reliable, rigorous, and comprehensive form of scientific knowledge,  in contrast to more common uses of the word "theory" that imply that something is unproven or speculative which in formal terms is better characterized by the word hypothesis. Theories guide the enterprise of finding facts rather than of reaching goals, and are neutral concerning alternatives among values.
To theorize is to develop this body of knowledge. The word theory or "in theory" is sometimes used erroneously by people to explain something which they individually did not experience or test before.
Instead of using the word hypothetically, it is replaced by a phrase: "in theory". In some instances the theory's credibility could be contested by calling it "just a theory" implying that the idea has not even been tested. These two things are related but can be independent, because it is possible to research health and sickness without curing specific patients, and it is possible to cure a patient without knowing how the cure worked. The English word theory derives from a technical term in philosophy in Ancient Greek.
In the book From Religion to PhilosophyFrancis Cornford suggests that the Orphics used the word theoria to mean "passionate sympathetic contemplation". Pythagoras emphasized subduing emotions and bodily desires to help the intellect function at the higher plane of theory.
Thus, it was Pythagoras who gave the word theory the specific meaning that led to the classical and modern concept of a distinction between theory as uninvolved, neutral thinking and practice. Aristotle's terminology, as already mentioned, contrasts theory with praxis or practice, and this contrast exists till today. For Aristotle, both practice and theory involve thinking, but the aims are different. Theoretical contemplation considers things humans do not move or change, such as natureso it has no human aim apart from itself and the knowledge it helps create.
On the other hand, praxis involves thinking, but always with an aim to desired actions, whereby humans cause change or movement themselves for their own ends. Any human movement that involves no conscious choice and thinking could not be an example of praxis or doing. Theories are analytical tools for understandingexplainingand making predictions about a given subject matter.
There are theories in many and varied fields of study, including the arts and sciences. A formal theory is syntactic in nature and is only meaningful when given a semantic component by applying it to some content e. Theories in various fields of study are expressed in natural languagebut are always constructed in such a way that their general form is identical to a theory as it is expressed in the formal language of mathematical logic. Theories may be expressed mathematically, symbolically, or in common language, but are generally expected to follow principles of rational thought or logic.
Theory is constructed of a set of sentences that are entirely true statements about the subject under consideration. However, the truth of any one of these statements is always relative to the whole theory.
Therefore, the same statement may be true with respect to one theory, and not true with respect to another. This is, in ordinary language, where statements such as "He is a terrible person" cannot be judged as true or false without reference to some interpretation of who "He" is and for that matter what a "terrible person" is under the theory. Sometimes two theories have exactly the same explanatory power because they make the same predictions.
A pair of such theories is called indistinguishable or observationally equivalentand the choice between them reduces to convenience or philosophical preference. The form of theories is studied formally in mathematical logic, especially in model theory. When theories are studied in mathematics, they are usually expressed in some formal language and their statements are closed under application of certain procedures called rules of inference.
A special case of this, an axiomatic theory, consists of axioms or axiom schemata and rules of inference.Include a clear and direct call to action. Include a call to action in the body text of your Facebook paid ad to encourage FB users to take your desired action. Use your Facebook ads to highlight special deals.
Facebook paid advertising can be used to call attention to your latest deals and sale events. You can create an ad for a website by selecting the Clicks to Website objective or the Website Conversions objective.
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You can opt in or out of sponsored stories in the left column of the ad creator tool. Customize your ad headline. Instead of leaving it as-is, type out your own customized ad headline to make the ad more enticing. Aside from your social media image selection, the headline is one of the main ways your ad will make an impact (or fail to).
FB ads can do more than you think. Using Facebook for advertising can help you promote a page, app, or even an event. Exercise all your options. Let others help with your ads. When you add another administrator to your Facebook ads account, they can stop and edit promotions for your page. The user must either be your friend on Facebook or have their email address be searchable on Facebook.
Simply choose their access level and click Add. Selecting a bidding option. You can choose from a number of different bid setups for controlling Facebook advertising costs. You can bid for clicks, impressions, or your desired objective (e. If you choose the recommended (and selected by default) option of bidding based on your objective, your bid will automatically be set to help you reach your objective, whereas bidding for clicks or impressions allows for more customization. Choose between daily or lifetime budget.
As an advertiser, you can choose to set up a daily budget or a lifetime budget.
A daily budget controls how much you will spend on a specific campaign per day. Your ads and sponsored stories stop showing once you hit your daily ad budget, helping your budget Facebook advertising rates based on each daily cycle. Lifetime budget lets you select how much you want to spend over the entire span of time a campaign is scheduled to run.
Want to change you ad campaign. Images are a powerful tool you can utilize for creating engaging, eye popping Facebook ads.Buffy (4) odds 1.
Marrock (2) odds 2. Adaboycharlie (9) odds Analysis SIMPLY STRIKING racing back from metro track and has three placings from five runs this prep, will take the power of beating. R5 1400m Class: Maiden, Set Weights 3:40PM Selections 2.
Bringagem (10) odds 3. Hinchman (8) odds Scratched 6. Oddfellow (11) odds 8. Bubbaleenah (6) odds Scratched Analysis BRINGAGEM on a seven day back-up and finished a neck back from the leader last start at Orange on a soft track, one of the picks of the day. R6 1400m Class: BM50, Handicap 4:15PM Selections 2. Diamond Charlie (13) odds 1.Lecture 1 - The Theoretical Minimum
Sweet Fella (10) odds 10. Cuban Lass (8) odds 4. Oakwood Lady (6) odds Analysis DIAMOND CHARLIE won once this prep at Harden four runs back and finished in the middle of the pack last start at Orange, commands respect. R7 1400m Class: Handicap 4:50PM Selections 6. Vega (2) odds 11. Tycoon Mar (1) odds 4. Artistic Beauty (8) odds 7.
Prima Stella (11) odds Analysis Hard to see anything upsetting the top two choices. R8 1600m Class: Class 3, Handicap 5:30PM Selections 1. Cannon Run (9) odds 5. Celtic Diamond (11) odds 2. Noel's Gift (4) odds 4. Colonial Reign (6) odds Analysis CANNON RUN proven perfromer on a soft track and known to be strong late, a winning chance.
Warrnambool (VIC) Fine Good4 R1 1400m Class: 3-Y-O, Maiden, Set Weights 1:30PM Selections 4. Hermanito (1) odds 10. Splashette (3) odds 5. Solaazem (10) odds 8. Verdancy (8) odds Analysis HERMANITO placed at only start at Hamilton on a soft track and draws to do no work, the one to beat. Red Charlize (5) odds 9. Room to Rhyme (4) odds 5.
The Classical Theory of Fields
Kalangadoo Chrome (10) odds 7. Perfontein (1) odds Analysis RED CHARLIZE only just missed last start, finishing a length back from the winner at Hamilton and has three placings from five runs this prep, has solid claims. Party Tiger (13) odds 1. Black Roe (9) odds 13. Benella (6) odds 8.We use deep neural networks to learn how likely a team is to win, by making sense of large and diverse data sources, God mode for your bettingData is at the forefront of our prediction strategy.
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With game-by-game surprises, weekly power rankings continue to shift the on-field product. Welcome to Week 14 of the 2017 NFL season. With a new week, we get a few things: Fantasy football, cheering on your favorite team, and, of course, taking a peek at the spreads in order to make sure you're on the right side of every outcome.
ESTIf the Falcons want to make the playoffs, this feels like a must win. If the Saints want to earn a first round bye, this feels like a must win. Finally, a really good Thursday Night Football game.
On the short week, give me the home team to bounce back in the first of two late-season battles between these NFC South foes. We could be on the path to Jacoby Brissett vs. If you're in the viewing area, turn on the Red Zone. This is a big one--and a potential playoff matchup in January. After a road game last week, don't be shocked if the Vikings trip up.
Carolina's defense will make things difficult on Case Keenum and Cam Newton will win this one with his legs.Birmingham City - Wolverhampton Wanderers 1-2 2 5. Midtjylland - OB 3-1 1 6. On your Safaricom phone go the M-PESA menu 2.
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To improve the forecasting power, this paper constructs macro indices from large datasets and adaptively chooses optimal indices to predict stock returns. I find that adaptive macro indices explain a substantial fraction of the short-term variation in future stock returns, and have more forecasting power than both the historical average of stock returns and commonly used predictors.
The forecasting power exhibits a strong cyclical pattern, implying the ability of adaptive macro indices in capturing time-varying economic conditions. This finding highlights the importance of using dynamically-measured economic conditions to investigates empirical linkages between equity premium and macroeconomic fundamentals. We estimate the common macroeconomic factors using asymptotic principal component analysisdeveloped by Connor and Korajczyk (1986) and widely implemented for large macroeconomic panels (see Stock and Watson (2002a Watson (2002b Watson (2006), Ludvigson and Ng (2007, 2010), among others).
For a large number of macroeconomic time series this methodology can effectively distinguish noise from signal and summarize information into a small number of estimated common factors.
Macro Variables and the Components of Stock ReturnsArticleMar 2015J Empir FinanceViewShow abstract. Bulmash and Trivoli (1991) felt that long-term unemployment was related to capital market activity.